Question about 2002 Yamaha V-Max

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My 1989 vmax has poor compression on the rear 2 cylinders.

This loss in compression happened over a period of 50 miles or so of intermittent riding. A standard comp. test showed 125-135on front 2 cyl. and 80 or so on rear 2 cyl. I attempted a leak down test but did not have proper tools to be accurate... It pops occasionally through the carbs and sometimes exaust. This all started with a slight miss at light throttle/cruise and progressed to no power and resulting comp. loss. I strongly suspect poor valve seal. Bike has stage 7 and kerker pipe and could easily be over revved. I suspect the previous owner of this. My question is if valves were bent from hitting pistons due tue excessive rpm why would only the rear 2 cyl. be affected and why would the problem get worse over time? I have purchased rebuilt assembled heads to install but would like to make sure before removing the engine for repair...Thanks for any help very much,Nik

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You can rule out poor piston rings by doing another compression test, this time with a teaspoon or two of oil in the cylinder. Oil will help seal a piston ring (raising compression temporarily), but will have no effect on valves. I would suggest burnt valves rather than bent. That might explain why only the back two cylinders, they run a little hotter. Under normal circumstances (stock exhaust, sane driving) not hot enough to make a difference but if your previous owner was a clown who knows?

Good luck Nik, those bikes are a lot of fun and pretty reliable when done right.

Posted on Jan 15, 2009

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I have a 2003 V Star 1100, I always run hi test gas and it has always ran fine . a couple of weeks ago on vacation it started to bog intermittantly(running on one cylinder)and would clear when the thr


There is no need to run anything other than regular gas in the bike, the extra octane only makes the VMax engines run hotter. I would start by adding about a half a can of Sea Foam to about a half tank of gas. Run it at idle until the new mixture is in the carbs 7 or 8 minutes ought to do it. Leave the bike sit overnight, then top off the gas tank and take the bike for a hard ride, ride it like you stole it, this should clear your problem. CV carbs also need to be synced once in awhile and should have been done if you rejetted.

Sep 09, 2014 | Yamaha V Star 1100 Classic Motorcycles

1 Answer

Harley trouble codes


There are two types of diagnostic trouble codes (DTCs), current and historic. The Check Engine Lamp will not indicate the existence of historic trouble codes.

1 Current 53 ECM flash error

2 Historic 53 ECM flash error

3 Current 54 ECM EEPROM error

4 Historic 54 ECM EEPROM error

5 Current 63 ECM serial data low

6 Current 63 ECM serial data open/high

7 Current 63 TSSM serial data low

8 Current 63 TSSM serial data open/high

9 Current 61 Loss of TSM/TSSM serial data

10 Current 14 Loss of all ECM serial data (state of health)10 24 Loss of vehicle speed10 33 Loss of vehicle inhibit motion10 43 Loss of powertrain security status

11 Current 33 System relay contacts open

12 Current 33 System relay coil high/shorted

13 Current 33 System relay coil open/low

14 Current 33 System relay contacts closed

15 Current 99 Incorrect password

16 Current 99 Missing password

17 Current 41 CKP sensor intermittent

18 Current 41 CKP sensor synch error

19 Current 11 TP sensor open/low

20 Current 11 TP sensor high

21 Current 12 MAP sensor open/low

22 Current 12 MAP sensor high

23 Current 14 ET sensor voltage low

24 Current 14 ET sensor open/high

25 Current 15 IAT sensor voltage low

26 Current 15 IAT sensor open/high

27 Current 24 Front ignition coil open/low

28 Current 25 Rear ignition coil open/low

29 Current 24 Front ignition coil high/shorted

30 Current 25 Rear ignition coil high/shorted

31 Current 24 Front cylinder combustion intermittent

32 Current 25 Rear cylinder combustion intermittent

33 Current 23 Front injector open/low

34 Current 32 Rear injector open/low

35 Current 23 Front injector high

36 Current 32 Rear injector high

37 Current 16 Battery voltage low

38 Current 16 Battery voltage high

39 Current 43 VSS sensor low

40 Current 43 VSS sensor high

41 Current N/A (no speedo code for this) Check engine light open/low NO CHECK ENGINE LAMP AT KEY ON or CHECK ENGINE LAMP ON CONTINUOUSLY

42 Current N/A (no speedo code for this) Check engine light high NO CHECK ENGINE LAMP AT KEY ON

43 Current 35 Tachometer low

44 Current 35 Tachometer high

45 Current 25 Rear cylinder no combustion

46 Current 24 Front cylinder no combustion

47 Current 34 Loss of idle speed control IDLE AIR CONTROL

48 Current 35 Accelerometer fault

49 Current 34 Starter output high

50 Current 25 Ignition enable output high

51 Current 21 Left turn output fault

52 Current 22 Right turn output fault

53 Current 11 Battery voltage high

54 Current 31 Alarm output low

55 Current 32 Alarm output high

56 Current 41 Ignition switch open/low

57 Historic 63 ECM serial data low

58 Historic 63 ECM serial data open/high

59 Historic 63 TSSM serial data low

60 Historic 63 TSSM serial data open/high

61 Historic 61 Loss of TSM/TSSM serial data

62 Historic 14 Loss of all ECM serial data (state of health)

63 Historic 33 System relay contacts open

64 Historic 33 System relay coil high/shorted

65 Historic 33 System relay coil open/low

66 Historic 33 System relay contacts closed

67 Historic 99 Incorrect password

68 Historic 99 Missing password

69 Historic 41 CKP sensor intermittent

70 Historic 41 CKP sensor synch error

71 Historic 11 TP sensor open/low

72 Historic 11 TP sensor high

73 Historic 12 MAP sensor open/low

74 Historic 12 MAP sensor high

75 Historic 14 ET sensor voltage low

76 Historic 14 ET sensor open/high

77 Historic 15 IAT sensor voltage low

78 Historic 15 IAT sensor open/high

79 Historic 24 Front ignition coil open/low

80 Historic 25 Rear ignition coil open/low

81 Historic 24 Front ignition coil high/shorted

82 Historic 25 Rear ignition coil high/shorted

83 Historic 24 Front cylinder combustion intermittent

84 Historic 25 Rear cylinder combustion intermittent

85 Historic 23 Front injector open/low

86 Historic 32 Rear injector open/low

87 Historic 23 Front injector high

88 Historic 32 Rear injector high

89 Historic 16 Battery voltage low

90 Historic 16 Battery voltage high

91 Historic 43 VSS sensor low

92 Historic 43 VSS sensor high

93 Historic N/A Check engine light open/low NO CHECK ENGINE LAMP AT KEY ON or CHECK ENGINE LAMP ON CONTINUOUSLY

94 Historic N/A Check engine light high NO CHECK ENGINE LAMP AT KEY ON

95 Historic 35 Tachometer low

96 Historic 35 Tachometer high

97 Historic 25 Rear cylinder no combustion

98 Historic 24 Front cylinder no combustion

99 Historic 34 Loss of idle speed control

100 Historic 35 Accelerometer fault

101 Historic 34 Starter output high

102 Historic 25 Ignition enable output high

103 Historic 21 Left turn output fault

104 Historic 22 Right turn output fault

105 Historic 11 Battery voltage high

106 Historic 31 Alarm output low

107 Historic 32 Alarm output high

108 Historic 41 Ignition switch open/low

Aug 11, 2014 | 2000 Harley Davidson FLHRCI Road King...

1 Answer

2003 harley softail will not start


Did you pull any error codes (Diagnostic Trouble Codes)?

1. Remove right side saddlebag and side cover if so equipped. Remove protective plug from data link connector. Other models will be under the seat.

2. To activate the diagnostic feature,follow these steps.
a. Create diagnostic test wire or use a female spade clip which will bridge the two terminals perfectly.
b. Install diagnostic test wire/clip across Terminals 1 and 2 on the data link connector, they are marked.
c. Turn Ignition/Light Key Switch to IGNITION and wait approximately 10 seconds (4 seconds lamp ON, 6 seconds lamp OFF) for check engine lamp to start flashing.

3. All trouble codes are sent out as a series of flashes. To retrieve the first digit of the trouble code simply observe the number of times the lamp flashes.
a. The lamp will then flash one or more times to indicate the first digit of the trouble code.
b. The length of time the lamp is illuminated and the length of time in which it is off are each about 0.5 second in duration.

4. The second digit follows:
a. Following the transmission of the first digit, there is a 1.2 second pause in which the lamp is off.
b. The lamp will then flash one or more times to indicate the second digit of the trouble code. Count the number of times the lamp flashes to retrieve the second digit.

5. If more than one trouble code is sent:
a. Following transmission of the second digit of the first code, there is a 3 second pause in which the lamp is off.
b. Once all codes have been sent, the data string is repeated. When you have recorded the same trouble code twice, it is an indication that the transmission has been restarted and that all trouble codes have been retrieved.

IMPORTANT NOTE ..If diagnostic test wire is installed across Pins 1 and 2 on connector in lieu of a Scanalyzer, the ECM is placed in a diagnostic test mode and the engine will start. The test wire must be removed from the data connector and the ignition switch turned OFF or the check engine lamp will continue to flash codes. A historic trouble code resides in the memory of the ECM until the code is cleared by use of the Scanalyzer or a total of 50 trips has elapsed. A "trip" consists of a start and run cycle, the run cycle lasting at least 30 seconds. After the 50 trip retention period, the trouble code is automatically erased from memory (that is, assuming no subsequent faults of the same type are detected in that period). The numbers after the 'historic' or 'current' is the speedo code number, but without the electrical diagnostics manual you're not going to know what they mean.

1 Current 53 ECM flash error
2 Historic 53 ECM flash error
3 Current 54 ECM EEPROM error
4 Historic 54 ECM EEPROM error
5 Current 63 ECM serial data low
6 Current 63 ECM serial data open/high
7 Current 63 TSSM serial data low
8 Current 63 TSSM serial data open/high
9 Current 61 Loss of TSM/TSSM serial data
10 Current 14 Loss of all ECM serial data (state of health)10 24 Loss of vehicle speed10 33 Loss of vehicle inhibit motion10 43 Loss of powertrain security status
11 Current 33 System relay contacts open
12 Current 33 System relay coil high/shorted
13 Current 33 System relay coil open/low
14 Current 33 System relay contacts closed
15 Current 99 Incorrect password
16 Current 99 Missing password
17 Current 41 CKP sensor intermittent
18 Current 41 CKP sensor synch error
19 Current 11 TP sensor open/low
20 Current 11 TP sensor high
21 Current 12 MAP sensoropen/low
22 Current 12 MAP sensorhigh
23 Current 14 ET sensor voltage low
24 Current 14 ET sensor open/high
25 Current 15 IAT sensorvoltage low
26 Current 15 IAT sensoropen/high
27 Current 24 Front ignition coilopen/low
28 Current 25 Rear ignition coil open/low
29 Current 24 Front ignition coilhigh/shorted
30 Current 25 Rear ignition coilhigh/shorted
31 Current 24 Front cylinder combustion intermittent
32 Current 25 Rear cylinder combustion intermittent
33 Current 23 Front injector open/low
34 Current 32 Rear injector open/low
35 Current 23 Front injector high
36 Current 32 Rear injector high
37 Current 16 Battery voltage low
38 Current 16 Battery voltage high
39 Current 43 VSS sensor low
40 Current 43 VSS sensor high
41 Current N/A (no speedo code for this) Check engine light open/low NO CHECK ENGINE LAMP AT KEY ON or CHECK ENGINE LAMP ON CONTINUOUSLY
42 Current N/A (no speedo code for this) Check engine light high NO CHECK ENGINE LAMP AT KEY ON
43 Current 35 Tachometer low
44 Current 35 Tachometer high
45 Current 25 Rear cylinder no combustion
46 Current 24 Front cylinder no combustion
47 Current 34 Loss of idle speed control IDLE AIR CONTROL
48 Current 35 Accelerometer fault
49 Current 34 Starter output high
50 Current 25 Ignition enable output high
51 Current 21 Left turn output fault
52 Current 22 Right turn output fault
53 Current 11 Battery voltage high
54 Current 31 Alarm output low
55 Current 32 Alarm output high
56 Current 41 Ignition switchopen/low
57 Historic 63 ECM serial data low
58 Historic 63 ECM serial data open/high
59 Historic 63 TSSM serial data low
60 Historic 63 TSSM serial data open/high
61 Historic 61 Loss of TSM/TSSM serial data
62 Historic 14 Loss of all ECM serial data (state of health)
63 Historic 33 System relay contacts open
64 Historic 33 System relay coil high/shorted
65 Historic 33 System relay coil open/low
66 Historic 33 System relay contacts closed
67 Historic 99 Incorrect password
68 Historic 99 Missing password
69 Historic 41 CKP sensor intermittent
70 Historic 41 CKP sensor synch error
71 Historic 11 TP sensor open/low
72 Historic 11 TP sensor high
73 Historic 12 MAP sensor open/low
74 Historic 12 MAP sensorhigh
75 Historic 14 ET sensor voltage low
76 Historic 14 ET sensor open/high
77 Historic 15 IAT sensorvoltage low
78 Historic 15 IAT sensoropen/high
79 Historic 24 Front ignition coilopen/low
80 Historic 25 Rear ignition coilopen/low
81 Historic 24 Front ignition coilhigh/shorted
82 Historic 25 Rear ignition coilhigh/shorted
83 Historic 24 Front cylinder combustion intermittent
84 Historic 25 Rear cylinder combustion intermittent
85 Historic 23 Front injector open/low
86 Historic 32 Rear injector open/low
87 Historic 23 Front injector high
88 Historic 32 Rear injector high
89 Historic 16 Battery voltage low
90 Historic 16 Battery voltage high
91 Historic 43 VSS sensor low
92 Historic 43 VSS sensor high
93 Historic N/A Check engine light open/low NO CHECK ENGINE LAMP AT KEY ON or CHECK ENGINE LAMP ON CONTINUOUSLY
94 Historic N/A Check engine light high NO CHECK ENGINE LAMP AT KEY ON
95 Historic 35 Tachometer low
96 Historic 35 Tachometer high
97 Historic 25 Rear cylinder no combustion
98 Historic 24 Front cylinder no combustion
99 Historic 34 Loss of idle speed control
100 Historic 35 Accelerometer fault
101 Historic 34 Starter output high
102 Historic 25 Ignition enable output high
103 Historic 21 Left turn output fault
104 Historic 22 Right turn output fault
105 Historic 11 Battery voltage high
106 Historic 31 Alarm output low
107 Historic 32 Alarm output high
108 Historic 41 Ignition switch open/low

Dec 28, 2013 | 2003 Harley Davidson FXST Softail Standard

1 Answer

Retrieve codes for 2003 road king


1. Remove right side saddlebag and side cover if so equipped. Remove protective plug from data link connector.
2. To activate the diagnostic feature, proceed as follows:
a. Create diagnostic test wire or use a female spade clip.
b. Install diagnostic test wire across Terminals 1 and 2 on the data link connector.
c. Turn Ignition/Light Key Switch to IGNITION and wait approximately 10 seconds (4 seconds lamp ON, 6 seconds lamp OFF) for check engine lamp to start flashing.
3. All trouble codes are sent out as a series of flashes. To retrieve the first digit of the trouble code simply observe the number of times the lamp flashes.
a. The lamp will then flash one or more times to indicate the first digit of the trouble code.
b. The length of time the lamp is illuminated and the length of time in which it is off are each about 0.5 second in duration.
4. The second digit follows:
a. Following the transmission of the first digit, there is a 1.2 second pause in which the lamp is off.
b. The lamp will then flash one or more times to indicate the second digit of the trouble code. Count the number of times the lamp flashes to retrieve the second digit.
5. If more than one trouble code is sent:
a. Following transmission of the second digit of the first code, there is a 3 second pause in which the lamp is off.
b. Once all codes have been sent, the data string is repeated. When you have recorded the same trouble code twice, it is an indication that the transmission has been restarted and that all trouble codes have been retrieved.
IMPORTANT NOTE ..If diagnostic test wire is installed across Pins 1 and 2 on connector in lieu of a Scanalyzer, the ECM is placed in a diagnostic test mode and the engine will start. The test wire must be removed from the data connector and the ignition switch turned OFF or the check engine lamp will continue to flash codes. A historic trouble code resides in the memory of the ECM until the code is cleared by use of the Scanalyzer or a total of 50 trips has elapsed. A "trip" consists of a start and run cycle, the run cycle lasting at least 30 seconds. After the 50 trip retention period, the trouble code is automatically erased from memory (that is, assuming no subsequent faults of the same type are detected in that period). The numbers after the 'historic' or 'current' is the speedo code number, but without the electrical diognostics manual you're peeing into the wind.
1 Current 53 ECM flash error
2 Historic 53 ECM flash error
3 Current 54 ECM EEPROM error
4 Historic 54 ECM EEPROM error
5 Current 63 ECM serial data low
6 Current 63 ECM serial data open/high
7 Current 63 TSSM serial data low
8 Current 63 TSSM serial data open/high
9 Current 61 Loss of TSM/TSSM serial data
10 Current 14 Loss of all ECM serial data (state of health)
10 24 Loss of vehicle speed
10 33 Loss of vehicle inhibit motion
10 43 Loss of power train security status
11 Current 33 System relay contacts open
12 Current 33 System relay coil high/shorted
13 Current 33 System relay coil open/low
14 Current 33 System relay contacts closed
15 Current 99 Incorrect password
16 Current 99 Missing password
17 Current 41 CKP sensor intermittent
18 Current 41 CKP sensor synch error
19 Current 11 TP sensor open/low
20 Current 11 TP sensor high
21 Current 12 MAP sensor open/low
22 Current 12 MAP sensor high
23 Current 14 ET sensor voltage low
24 Current 14 ET sensor open/high
25 Current 15 IAT sensor voltage low
26 Current 15 IAT sensor open/high
27 Current 24 Front ignition coil open/low
28 Current 25 Rear ignition coil open/low
29 Current 24 Front ignition coil high/shorted
30 Current 25 Rear ignition coil high/shorted
31 Current 24 Front cylinder combustion intermittent
32 Current 25 Rear cylinder combustion intermittent
33 Current 23 Front injector open/low
34 Current 32 Rear injector open/low
35 Current 23 Front injector high
36 Current 32 Rear injector high
37 Current 16 Battery voltage low
38 Current 16 Battery voltage high
39 Current 43 VSS sensor low
40 Current 43 VSS sensor high
41 Current N/A (no speedo code for this) Check engine light open/low NO CHECK ENGINE LAMP AT KEY ON or CHECK ENGINE LAMP ON CONTINUOUSLY
42 Current N/A (no speedo code for this) Check engine light high NO CHECK ENGINE LAMP AT KEY ON
43 Current 35 Tachometer low
44 Current 35 Tachometer high
45 Current 25 Rear cylinder no combustion
46 Current 24 Front cylinder no combustion
47 Current 34 Loss of idle speed control IDLE AIR CONTROL
48 Current 35 Accelerometer fault
49 Current 34 Starter output high
50 Current 25 Ignition enable output high
51 Current 21 Left turn output fault
52 Current 22 Right turn output fault
53 Current 11 Battery voltage high
54 Current 31 Alarm output low
55 Current 32 Alarm output high
56 Current 41 Ignition switch open/low
57 Historic 63 ECM serial data low
58 Historic 63 ECM serial data open/high
59 Historic 63 TSSM serial data low
60 Historic 63 TSSM serial data open/high
61 Historic 61 Loss of TSM/TSSM serial data
62 Historic 14 Loss of all ECM serial data (state of health)
63 Historic 33 System relay contacts open
64 Historic 33 System relay coil high/shorted
65 Historic 33 System relay coil open/low
66 Historic 33 System relay contacts closed
67 Historic 99 Incorrect password
68 Historic 99 Missing password
69 Historic 41 CKP sensor intermittent
70 Historic 41 CKP sensor synch error
71 Historic 11 TP sensor open/low
72 Historic 11 TP sensor high
73 Historic 12 MAP sensor open/low
74 Historic 12 MAP sensor high
75 Historic 14 ET sensor voltage low
76 Historic 14 ET sensor open/high
77 Historic 15 IAT sensor voltage low
78 Historic 15 IAT sensor open/high
79 Historic 24 Front ignition coil open/low
80 Historic 25 Rear ignition coil open/low
81 Historic 24 Front ignition coil high/shorted
82 Historic 25 Rear ignition coil high/shorted
83 Historic 24 Front cylinder combustion intermittent
84 Historic 25 Rear cylinder combustion intermittent
85 Historic 23 Front injector open/low
86 Historic 32 Rear injector open/low
87 Historic 23 Front injector high
88 Historic 32 Rear injector high
89 Historic 16 Battery voltage low
90 Historic 16 Battery voltage high
91 Historic 43 VSS sensor low
92 Historic 43 VSS sensor high
93 Historic N/A Check engine light open/low NO CHECK ENGINE LAMP AT KEY ON or CHECK ENGINE LAMP ON CONTINUOUSLY
94 Historic N/A Check engine light high NO CHECK ENGINE LAMP AT KEY ON
95 Historic 35 Tachometer low
96 Historic 35 Tachometer high
97 Historic 25 Rear cylinder no combustion
98 Historic 24 Front cylinder no combustion
99 Historic 34 Loss of idle speed control
100 Historic 35 Accelerometer fault
101 Historic 34 Starter output high
102 Historic 25 Ignition enable output high
103 Historic 21 Left turn output fault
104 Historic 22 Right turn output fault
105 Historic 11 Battery voltage high
106 Historic 31 Alarm output low
107 Historic 32 Alarm output high
108 Historic 41 Ignition switch open/low

Apr 11, 2013 | 2003 Harley Davidson FLHRCI Road King...

1 Answer

Firing order and cylinder # for 2009 Yahama Vmax


Firing order is 1-3-4-2 #1 is the left rear cylinder #3 right rear, #2 left front and of course #4 is right front cylinder. Please rate my solution, this was hard to find, allot of misinformation out there on this subject

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1 Answer

One cyllinder is compressing at 110 and the remainder at 92


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Oct 04, 2010 | 1984 Honda GL 1200 Interstate Gold Wing

1 Answer

2006 HD Sportster 1200XL rear cylinder not working


Sounds like an ignition problem. Probably a fowled or damaged spark plug or lose or damaged spark plug lead. Try new spark plugs, I only recommend NGK and you may need to fit hotter plugs for cold weather riding. Plugs are cheap and thats the best place to start. 

Dec 16, 2008 | 2006 Harley Davidson XL 1200 R Sporster...

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