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Overbored cl175 honda motercycle i cant get it timed

Iused the timing mark .fires when intake is open instead of when exhaust valve open. how could it be 180 out?

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U need a clymer or haynes book------engine fires wen both valves are closed--------the flyweel has a mark that lines with engine mark--take off valve covers and tapets will be loose at top dead center--means theyr shut for firing

Posted on Nov 01, 2012


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Posted on Jan 02, 2017

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SOURCE: Honda CRF 100 timing

Turn the motor over clockwise until the punch mark on the gear lines up with the arrow mark on the side case. Check to be sure that the cam lobes are facing to the rear of the bike, if they are pointing toward the front keep going until they face back and the punch mark aligns up with the mark on the case.ab798e0.jpg

Check the cam gear to make sure the two marks on the gear are level with the surface of the head.

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Posted on Jan 29, 2009

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SOURCE: cant set valve timing

Hi there - not really a solution, but i found an article where someone mentioned a mistake in the clymer manual regarding the timing issue on these bikes - i will have to track it down, might be in one of my saved articles. Give me a few days and ill probe into it - google (setting timing honda vf750 clymer) and you might come across it! Regards - 

Posted on May 20, 2009

  • 190 Answers

SOURCE: Lost my Honda VF400F engine timing


Posted on May 21, 2009

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SOURCE: valve clearance on xr200 1993

.002" on the intake, and .003" on the exhaust valves (engine cold).

Posted on Nov 25, 2009

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SOURCE: i just want to know,

Valve Clearance: Intake 0.05mm (0.002 in), Exhaust 0.05mm (0.002 in)

There should be a nick or an triangular arrow stamped on the magneto flywheel and another one on the casing. When these two marks are lined up the piston will be on TDC.

You may be able to obtain a service manual here:-

Posted on Apr 02, 2011

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Overbored a cl175 50 thousands .cant get it timed.acts like it is out 180.

You're wrong. It should not fire when the exhaust valve is open-that is the exhaust stroke. As the piston moves down after the exhaust stroke, the intake valve opens and the air-fuel mixture is pulled into the cylinder. Then piston travels up, compressing the mixture( both valves are closed, now), and at the top of this stroke the ignition fires, driving the piston down.
Sounds like your timing is a bit too soon, if it's firing when the intake is open. Try retarding the time just a bit.
If that doesn't work, find tdc of the compression stroke of number one cylinder: pull the sparkplug out and turn the crank around by hand (with a socket on the crank pulley) with your finger over the plug hole. As the crank comes around to the zero mark (TDC), you will feel pressure bui;ld up on your finger if you are on the compression stroke. If you are on the exhaust stroke there will not be pressure buildup as the piston approaches TDC. Once you have number one cylinder at TDC of the compression stroke, the rotor will be pointing to the number one plug wire tower on the distributor cap. If the dist. is off 180, rotor will be pointing opposite of number one.

Nov 01, 2012 | Cars & Trucks

1 Answer

97 camaro wont start after fixing firing order

Why did you "fix" the firing order? If it's a smallblock, the order has been the same since 1955.
18436572 clockwise on the cap, beginning with the timing mark on the front pulley at "0" (TDC).
Only possible mistake you can make is that the mark lines up at TDC twice. Once right after the intake valve closes (where you want it to be, at the top of the compression stroke) and once when the exhaust valve closes (180 degrees out) in which case the rotor would point to the firewall instead of towards the front of the engine. Cylinders are numbered 1357 on the left side and 2468 on the right side (passenger side) front to back.
If you have done this and the engine still fails to start, you have another problem that you need to look for. If you have a different engine, the process is the same but you'd need to find the order for that engine.

Jun 20, 2011 | 1997 Chevrolet Camaro

1 Answer

How do i time a 250 sx 3 wheeler

The cam gear has 2 holes opposite from each other, some have slash marks.
Those marks will be parellel with the head once the timing chain is on.
Both intake and exhaust valve will be closed.
If the lobes on the cam are up, then your 180 degrees out and need to flip it over

Assuming the jug is on , and motor is on TDC, install the head, hold the cam with the cam gear attached tand place it in the head with the lobes down in its place, look at the marks on the cam gear and keep them parellel with the head, put the timing chain over the cam gear carefully.
once the chain is on, check that the motor didn't move and is still on TDC, and that when you lay the cam all the way down, the cam gear marks are parellel with the head.

If the marks are parellel and motor is on TDC, now you can put your rockers back on and adjust your valve clearance. .03 intake .05 exhaust

Install you exhaust, intake , carb, etc and fire it up.

Dec 09, 2010 | Honda NS 250 R Motorcycles

1 Answer

Timing idler pully bearing flew apart going 70.replaced itand timing beltbut it still acts like the timing is off.

Sounds like the belt is off a tooth on the cam or crank sprocket, go back over your work closely, this is an easy thing to have happen to even the best of them all.
Remove # 1 plug turn over till the piston is top, both intake and exhaust are closed, next line up your timing marks, possible you may have it 180 out?
Lots of techs get #1 piston up but dont look to see if the intake and exhaust valves are closed.... if the valves are not both closed you are not up on # 1, both #1 and # 3 will have the intake and exhaust vales closed when you are on the real #1, #1 and #3 are companion cylinders as #2 and #4 are in the firing order having #1 piston up and only one valve closed throughs you completely off that is why it is recommende to pull tghe valve cover off and check the 1 and 3 companion cylinders for proof positive you are on #1.
Good luck!!!

Nov 05, 2010 | Daewoo Nubira Cars & Trucks

1 Answer

My crank shaft is rotating twise the crank shaft. HOW MY 1342 FIRING WILL OCCURE?, I can spare only 30 digree for charge and spark plug contact. THERE ARE ONLY 2+2 CYLINDER. 180 DIGREE APPART KINDLY REPLY...

Your crankshaft turns 2x times the camshaft. Put it this way as # 1 cylinder reaches TDC (top dead center) of the firing/compression stroke, and this will be after a (8 degs BTDC) spark to ignite the air/fuel mix, the # 3 cyl. will be at BDC of the intake stroke and as #1 begins its power down stroke, (during explosion of air/fuel mix), #3 begins its compression up stroke, the #4 cyl. will be coming down with #1 cyl. but #4 will be in the beginning of its intake down stroke, and #2 cyl. will be coming up with #3 but #2will be in its BDC of the exhaust stroke. Which has just fired previously to #1. 1342134213421342 etc. Now the cam turns to open / close the valves; In the outline above, #1 cyl. valves will both be closed. #3 cyl. will have the intake starting to close at this point. #4 cyl. will just be starting to open its intake valve, and #2 will be starting to open its exhaust valve. Is all this clear as mud? So as the crank makes one full rotation (in a 4cyl. engine) only the firing of one cylinder has happened.and at every rotation one cyl. will fire. So #1 at TDC then one full rotation, #1 back at TDC, but this TDC is half of its 4 cycles, (1)Intake, (2)compression, (3)power, (4)exhaust. this 1234 refers to the 4 cycles of the rotation not firing order.

Oct 31, 2010 | 2008 Volkswagen Jetta

2 Answers

Firing order and timing for 292 ford

The firing order is 1-5-4-8-6-3-7-2, distributor turns counter-clockwise. The ignition timing can be set using marks on the vibration damper. The wide mark is TDC (Top Dead Center), each mark after the wide mark represents 2, 4, 6, 8 and 10 degrees before TDC. Set timing 3 degrees BTDC (Before Top Dead Center). In addition, valve timingis set like this: Intake opens: 12 degrees BTDC
Exhaust Closes: 8 degrees ATDC

Feb 04, 2010 | 1981 Ford F 100

1 Answer


Yes be sure the number one piston is at TDC firing stroke or compresson stroke and line up the timing mark pointer is pointed at exactly zero. One more thing when aligning the camshaft sprocket or sprockets be sure that when you are rotating the sprocket for the cam it is rotating in the correct direction and also be sure you observe the intake valve for number one shutting as you bring the marks up to alignment points, the intake valve and the exhaust valve should be shut when the marks line up if not you could have the cam sprocket off 180 degrees, get it right the first time or you may damage a valve trying to start.

Dec 29, 2009 | 1997 Isuzu Hombre

2 Answers

I have just rebuilt the engine on my 95 isuzu rodeo and when i set the timing marks according to facotry specs it will not start and sounds like the valves are open when the pistons reach the top of the...

You said you did to specs but if that was the case the valves would not be open at tdc.
triple check your timing(get a light if nessisary)
check that you dont have the plug wires mixed up
Izuzu engines are very picky and if the marks are not correct after turning over two rotations as stated in the book it will not run.
(im also taking that this is the v6SOHC engine)

Oct 04, 2009 | 1995 Isuzu Rodeo

1 Answer

Replaced head gaskets now it wont start

You could be off time by 180 degrees. The crank turns twice for every one turn of the camshaft. To double check take off the vale cover for #1 pistonand turn the engine by hand a little way past top dead center and see which valve opens. It should be the exhaust valve. If it's not, simply rotate the engine until you see the intake open and start to close and line up your timing marks from there. Then reposition your distributor so that it is in line to fire on that cylinder. Hope this helps.

Sep 22, 2009 | 1994 Plymouth Voyager

4 Answers

Timing setting

No it should not make a differance considering the engine will be constantly rotating, because the engine must be on and at normal operating temperature to set the timing.

Jul 25, 2009 | 1997 Isuzu Rodeo

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