Question about 2001 Yamaha YZF-R6

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1998 yz 400 runs strong at full throtle backfires at steady speed

Also will not idle

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Check your carburator settings.Too big idle jet maybe.Is the idle screw in proper position screwed in?

Posted on May 28, 2009

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1 Answer

Would my leaking intake cause my blazer to loose power going up hills


Yes it would. Take a can of Brakleen and with engine running spray around intake manifold. If it is the source of your leak, the idle will go up.

Dec 31, 2012 | 1997 Chevrolet Blazer

1 Answer

My 2001 yz 250 N-1 just died after running really strong 10 minutes into the trail. I changed the plug and it wouldnt turn over and just backfire like every so many kicks.


Hi, Brian and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. The gas cap is not venting properly or fuel tank venting system blocked.
15. A failed fuel pump, pressure regulator and or fuel injectors.
16. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
17. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the links below. Good luck and have a nice day.
2000 YZ250 Back fire Yamaha 2 Stroke
Bike won start just backfires occasionally
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Jan 15, 2012 | Yamaha YZ 250 Motorcycles

1 Answer

I started my yz 250 up and warmed it up. I took off and was practicing wheelies while waiting for my partner to get ready. I took off into the woods and it died on me down at the bottom of the hills....


Hi, Anonymous and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. The gas cap is not venting properly or fuel tank venting system blocked.
15. A failed fuel pump, pressure regulator and or fuel injectors.
16. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
17. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the links below. Good luck and have a nice day.
Bike won start just backfires occasionally
89 Yamaha YZ250 WR wont start Backfires periodically
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals
OEM parts for Yamaha
YAMAHA YZ250 LC Owner Service Manual

Jan 14, 2012 | Yamaha YZ 250 Motorcycles

2 Answers

Idling good start good but stalls if pressing throtle


there is a piece of debris floating around in the sediment bowl of your carburetor, its lodged in the high speed jet causing it to stumble and backfire......it will most likely need a carb rebuild average repair cost on this machine is around 150 dollars at a reputable polaris dealer

Nov 19, 2009 | Polaris ATV

1 Answer

Yz 426 wont idle, backfires and bogs out


Hello phwolfe,
Did not backfire but , boged out appling fuel. Found it was flooding because
the floats were over filling the chambers. Adjusted float settings (by eye )
problem solved !! Keeping the chambers 1/2 to 3/4 full worked for me.
My Bike is a 1983 Midnight Maxim 653cc. 4 Cylinder. Maybe yours is fuel injected ?

Best of luck !!

Ron



Mar 18, 2009 | 2002 Yamaha YZ 426 F

1 Answer

Huskvarna model 141le wants to run full throtle all time


Hi

Adjust H,L and T from the carb.When the engine is warm check the spark from the sparkplug:It has to be a strong violet spark(not flame).Disassembly the carb and carefully clean it.Check the fuel pump(it should be tighten not bended),Check the fuel filter and air filter.;the gas tank ventil and the fuel hose.
regards savumihai71

Dec 04, 2008 | Husqvarna Chain Saw 20" Bar

1 Answer

Rough idle 2 cycle outboard


sounds like u need to do a tune up on it. clean the carb, new plug

Nov 17, 2008 | Sport & Outdoor - Others

1 Answer

Rough idle and engine stumbles at highway speed


I have run across this problem and discovered that it was the mass air flow sensor.

Nov 03, 2008 | 1998 GMC Suburban

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