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89 crx si - 92 civic d15b7

  #1  
Old 05-19-2009, 06:35 PM
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Default 89 crx si - 92 civic d15b7

ok so i have been having a problem with my motor... i was checking compression and 3 of the 4 cylinders wont hold... the one holds at about 90-120... im just wondering wut could be wrong wiht the other 3?? the motor has a mad ticking noise if it will start.. 2 of the spark plugs where saturated in oil and other 2 were dry...whats the possible problems im looking at? stuck valves? head gasket? rings? hole in piston? idk.... the motor hasnt over heated and no fluids are mixing! thanks
 
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Old 05-19-2009, 06:44 PM
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Did the timing belt slip or break?
 
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Old 05-19-2009, 06:59 PM
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it might of skipped but it did not break
 
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Old 05-19-2009, 07:00 PM
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i was driving about 45-50mph and dropped it to second gear when all this crap started....
 
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Old 05-19-2009, 07:04 PM
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Have you checked whether the mechanical timing of the cam and crank are off? If so, you may have bent some valves.
 
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Old 05-19-2009, 07:07 PM
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i have not but im going to be looking into that more tomorow in the day light....how exactly do i make sure it is still in timing?
 
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Old 05-19-2009, 07:17 PM
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Put the front end on stands, remove the valve cover and upper timing belt cover, use a 17-mm socket and large ratchet to turn the crank pulley COUNTERCLOCKWISE until the cam pulley is positioned perfectly at TDC1, and then check whether at this moment the crank pulley is also positioned perfectly at TDC1 (see diagram below). If not, the timing belt slipped, allowing a violent collision of the pistons with the valves, resulting in low cylinder compression.

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Old 05-19-2009, 08:22 PM
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could this of damaged the pistons also? and if this is what happend does it make sense that it has happend on 3 of the cylinders?
 
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Old 05-19-2009, 08:26 PM
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Originally Posted by candyman420 View Post
could this of damaged the pistons also? and if this is what happend does it make sense that it has happend on 3 of the cylinders?
Yes and Yes. Check the mechanical timing.
 
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Old 05-20-2009, 06:59 PM
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so i checked the timing and it is way off.. so i asume that that is what happend... i have full day off tomarow to take the head off and check out wuts going on.. any thing else that might of been damaged in this timeing jump? and on the crankshaft pulley i dont have a white line but it has like a 3 line mark and about an inch away from that is a single line is that wut im supost to use to make sure its in time?
 

Last edited by candyman420; 05-20-2009 at 07:01 PM. Reason: add more

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