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When turning crankshaft engin is sticking or getting caught after a little turn

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Crank bearings, rod bearings, pistons are seized, piston rings are broken, cylinder walls are damaged, broken or slipped timing belt resulting in piston vqlve interference or best case scenario you have a locked up component on the accessory drive belt remove the belt and try again if you have the same result start looking for a major mechanical failure

Posted on Dec 03, 2014

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Are the spark plugs in? if so, it is probably just compression in the cylinders. If plugs are out, there must be some interference.

Posted on Dec 02, 2014


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SOURCE: cant set timing crankshaft sticks wont turn all the way around why?

You would not normally turn a crankshaft backwards on an engine with a timing belt.
Is it possible the timing belt is damaged ?

Posted on Sep 07, 2012

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The doesn't want to start.camshafts are timed right and crankshaft fails to start.

If the crankshaft doesn't turn engine could be frozen. Try this put a socket on crankshaft bolt and use a breaker bar and try to turn it. The crankshaft should turn it may take a little strength. If it won't turn engine is frozen

May 03, 2016 | Cars & Trucks

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While fitting timing belt to my focas 05 1.4 i think crankshaft moved because with belt on when i turne cranksheft by hand its getting stuck or caught after a little turn

Your going to have to index your cams the cam gears have a notch/paint mark on both the gear and the housing behind them I'm not positive on that motor but on the majority of engines the crankshaft must be placed at top dead center of cyl 1 then match the each cam gear to its corresponding markings and the markings on the new belt pay attention when you reapply the belt tensioner as it tends to rotate the cams slightly when tension is applied if this happens you could cause a piston/pistons to contact the valves destroying the piston, bending the valves, or damaging the cam or crankshaft themselves. Good luck I suggest investing in a high quality repair manual before continuing

Dec 02, 2014 | Cars & Trucks

1 Answer

Cant set timing crankshaft sticks wont turn all the way around why?

You would not normally turn a crankshaft backwards on an engine with a timing belt.
Is it possible the timing belt is damaged ?

Sep 05, 2012 | 2004 Chrysler Pacifica

1 Answer

If the piston is hitting the valves would that be bent push rods

if your trying to get timing marks to line back up and the crankshaft stops turning, reverse direction of the crankshaft a little and then turn the camshaft a quarter turn.Repeat this process until timing marks are lined back up. not sure if this engine is an interference engine (valve bender) or not. Just dont force it past the stop or you could bend a valve for sure. after installing the timing belt, rotate the crankshaft two turns and recheck the timing marks on cam and crank. hope this helps, good luck.

Jul 14, 2012 | Cars & Trucks

1 Answer

Car will not star,engine won`t turn over,has a new battery and alternator

Turn on your lights and try to start; if the lights dim a little but nothing turns, you probably have a bad (corroded) connection either at the battery or the ground strap between engine and chassis. If the lights dim a lot, then it's time to try turning the engine with a wrench on the crankshaft. Do NOT have the ignition on when trying this. If the compression is normal, it will take some muscle to turn the crankshaft. If it is frozen, you may have a seized bearing or other reason that the engine is jammed.

Sep 23, 2011 | Audi A4 Cars & Trucks

1 Answer

I have a 1993 chevy blazer 201000 miles. It is the 4.3l CPI Vortec engine. The car has been running great even though its a beater, I recently replaced the pcv valve, fixed the leaky oil cooler lines, put...

first remove the plugs and try to turn the engine by hand(slowly), if the engine locks stop, remove valve covers and check each valve keeper, i think you may have dropped one , if not a nut or washer may have found its way into the piston chamber

May 11, 2011 | 1993 Chevrolet S-10 Blazer

1 Answer

Looking for cam timing mark on diesel 2l motor?

If you don't know what your cam timing mark is and the cam belt is off, make sure that the crankshaft is on Top Dead Centre (TDC). Turn it clockwise using the pully bolt until the timing marks lign up. If you feel any resistance, go back a little and move the cam shaft about 45 degrees as the piston is making contact with a valve. Carry on with the crankshaft until it is right. Take the rocker cover off and turn the camshaft until the inlet and exhaust valves on the rear cylinder are both opening an equal amount. You will see the camshaft lobes pushing them open. If you feel too much resistance move the crankshaft around a little to let the valves clear the pistons, then move the crankshaft back. If you look at the front cylinder, you will see that both valves are fully closed. This is TDC. See if you can find a mark and what it is lining up with. When you have reassembled everything, using a spanner on the crankshaft nut, turn the engine over clockwise for two full revolutions and if it turns without locking up (pistons touching valves) and all the timing marks still line up you can start it up. If your pump timing is still correct, you should be done. Don't run the engine with the rocker cover off or you will get oil everywhere.

Feb 19, 2010 | 1985 Toyota 4Runner

2 Answers

How to install the pulley to a 2000 lumina. the problem is that i dont know how to use the special tool. it seems like its not doing anything but ripping the inside the crankshaft where the screw goes in...

then stop and have someonce qualified finish this up. if this gets messed up you will be replacing the crankshaft(total engine teardown). the engine is not supposed to turn while you are turning the screw to install the pulley. the centre bolt should be screwed all the way in(not tight) and engine held stationary.

Nov 09, 2009 | 2000 Chevrolet Lumina

2 Answers


take the timing belt off reset the crank at 0 with # 1 piston at TDC ensure that both cams are up at twelve 'oclock with belt on, when the tension is released and the tensioner is tightened turn the crank atleast 360 degrees and ensure that the timing does not shift before starting engine

Aug 19, 2009 | 1990 Lexus LS 400

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