Question about 1995 GMC Sonoma

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Just put new timing kit on 95 gmc sonoma 2.2liter and lined marks up. truck still wont start. do i need to put number 1 cylinder on tdc before i start the truck. when trying to start it backfired a little.

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  • Anonymous Mar 22, 2014

    I put transmission in my 95 sonoma and it wont start

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Click the ignition so #1 cylinder is at top dead center then pull youre distributer cap off make sure the rotor is pointing towards # 1 cylinder if not you re timing is 180 deg off pull the distributer out a little and turn the rotor to # 1 cyl you probaly dont have the timing marks lined up correct if the timing is off it will back fire either out the air filter or exhaulst ..

Posted on Nov 13, 2009

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I put new head gaskets on my 93 Chevy ck1500 5.7,put it back together the TB is shooting flames,I know the timing is off where do I go from here,wont start


Set cylinder 1 to TDC on compression stroke, remove distributor and reset to stock marks. Generally there are timing marks for this. If you cannot locate the timing marks then note the direction that the rotor under the distributor cap rotates and reinstall it so it's pointing right at the cylinder 1 contact or just barely before when cylinder 1 is at TDC. That may get you close enough to start it. Then you will need a timing light to adjust the timing to the proper spec.

In the future mark the distributor cap and housing position relative to manifold or block prior to removal. Makes re-assembly a breeze.

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timing chain check....place cylinder 1 at end of compression then the timing mark place at 0 distributor rotor should be to number 1 cylinder. if not timing chain could be out of teeth
3 major things for engine is air,fire,fuel.then you say you change the distributor ....is it in good position???

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your supposed to line up marks at tdc which is the #1 cylinder all the way up. there should be a tdc mark on the crank. if you did it on #4 you are sparking on the exhaust stroke be careful this could blow a rod very easy.

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I set the timing TDC and matched up all of the marks but still wont start I rotated the crankshaft two times and everything lines up but still wont start what am I missing?


Has the engine been stripped down at all? If it has, the cam may be 1/2 turn off and should be realigned. Make sure no 1 cylinder is at TDC and that the valves are not moving . On a 4 cylinder you will se the valve change on cyl.4 when cyl 1 is TDC. Check that you have spark on any cylinder by fitting a spark plug and hold it to earth. Check your coil lead.

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I need some clarification. Did you replace the belt because it broke? If so you may need to replace the head. The problem is if the belt breaks when your moving it usually damages the head and thus needs to be replaced.

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If you have already turned it over you may need to give it a compression check to make sure you did not bend your valves. Set your timing mark to top dead center and take off your upper belt cover. Check the cam mark to the timing mark (TDC) on the lower cover. That will tell you if the belt is on correctly. If the timing marks check out you may have just flooded the motor . New plugs will assist in starting the motor if they are just WET fouled.

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I am planning to replace the timing belt on my daughter's 95 Corolla and was wondering what I need to align where before removing the belt eg How do I find TDC? Camshaft pulley and Crankshaft pulley...


TDC is top dead center/ remove spark plug on cylinder no. 1/ rotate the crankshaft pulley using a socket wrench and power handle and check if the piston on your cylinder no. 1 reach the top center that is TDC/ remove timing belt cover and locate a synchronized marking on your camshaft and crankshaft pulley/ remove old timing belt/ install a new one but make sure that the mark on your camshaft and crankshaft is perfectly synchronized before putting the cover/ manually rotate the crankshaft pulley again and see if it rotates 360 deg. freely then you can be sure you did the job correctly.

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1 Answer

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pull # 1 plug out,put screwdriver in cylinder head and see what mark you need to use, also on vortex there is a dot on the distributer gear that must be lined up with a lateral on the distributer ,so when it drops in it will be on # 1 firing cylinder

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1 Answer

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align marks properly on the top pulley gear,,and all the lower pulley gears,re-install chain ,then bring the cam shaft around to TDC then check that the distributor is actually pointing to number one cylinder.

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