Tip & How-To about 2007 Suzuki GSX-R 750

F1 Light

Some times the F 1 error light will not go off after start up!
I had this problem till I discovered that the exhaust valve was sticking.
Solution - Just spray penetrating oil on it and it should free out.
For a more long term fix, when it’s freed out spray copper anti seize on the mechanism.

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05 700 King quad with timing marks all lined up should all 4 valves open at almost the same time intake and exhaust open on exhaust stroke????


the exhaust and inlet valves will be moving if you rock the crank back and forward at TDC
this is called valve overlap and indicates that you are timing the valves on the exhaust stoke tdc and not the compression stroke tdc
turn the crank over till you get tdc again and see if the inlet and exhaust valves have clearance and the timing marks line up
timing is done only on no 1 piston TDC position compression stroke

Apr 19, 2016 | ATVs

1 Answer

setting valve clearances


360 with hydraulic lifters, the crankshaft wit a ratchet and socket to get each valve closed. When lifter is at bottom turn the valve adjuster out to where you have free movement then turn adjuster till the rocker arm touches the lifter, then turn the adjuster in three quarters of a turn, and that valve is adjusted. No other clearance is required on hydraulic lifters. Do this with each valve in turn as each piston comes to top dead center using the firing order as a guide. When #1 piston is up to top dead center, both valves are closed. Adjust intake and exhaust at this time. Then the next in the firing order. The firing order can be found on the intake as is each cylinder marked with it's number. If it were a Chevy small block, for example only, firing order is 1-8-4-3-6-5-7-2. I would bring # 1 cylinder up to top dead center on compression stroke by removing that spark plug and stick my finger in the hole and crank the engine till I felt my finger being pushed away with compression, then bring that piston up till the timing mark was on the "0" of the timing tab at drivers side of the harmonic balancer on the crank. Adjust both valves on #1 cylinder and then turn the crank until both valves of #8 cylinder were free moving at the rocker. Then to the next in order of fire. I would turn each adjuster out at least one full turn before starting this procedure, then adjust them in order of firing starting with #1. It isn't hard, just takes time to do it right.

Aug 12, 2014 | AMC CJ7 Cars & Trucks

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xcd 125 why verry heatin affter start


Hi Anonymous and the usual suspects are:
1. Insufficient oil supply, or oil not circulating.
2. Insufficient air passing over the engine.
3. Heavy carbon deposits.
4. Ignition timing retarded due to faulty MAP, CKP, O2, and/or CMP sensors.
5. Leaking intake or exhaust valve.
For more information about your issue, please visit the websites below. Good luck and have a nice day.
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Nov 10, 2013 | 2007 Bajaj Discover

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starts up runs then starts sputtering and dies doe not want to restart for a while was fine till i filled up first time i filled up in a while the motor just quit and took a long time to restart .


1 Inspect Air Filter Clogged or Dirty Air Filter. 2 Inspect Fuel Filter Clogged or Dirty Fuel Filter. 3 Inspect PCV Valve Clogged Emission System. 4 Inspect Choke Thermostat Stuck or Improperly Functioning Choke Thermostat. 5 Inspect EGR Valve Improperly Functioning or Faulty EGR Valve. 6 Inspect Carburetor Carburetor FLOODING. 7 Inspect Valve Burned, Worn, or Sticking Exhaust Valves. 8 Inspect Hose (PCV)at Clogged or Collapsed PCV Hoses.

May 22, 2010 | 2001 Chevrolet Silverado

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