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Old 11-15-2012, 06:29 PM   #1
Scooby Newbie
Member#: 301109
Join Date: Nov 2011
Location: rochester, ny
04 wrx

Default Need help (jump timing)

ok so i have an 04 wrx with a 35r 1000cc injectors twin walbros front mount etc etc.... was driving down the high way two days ago and after i boosted onto the on ramp like a mile down the road i felt the power of the engine go away... i would step on gas pedel and build boost but nothing was going on.. so i down shifted and as soon as i left the car out of gear it wanted to shut off right away and all rpms dropped i got it into gear and it kicked back up at that point i knew something was wrong so i started to pull over... and the car shut off when i was going about 40mph and wont start back up sense then. im guessing i jumped timing from doing some research and i did hear some nasty noises coming from the engine before the car shut off so im guessing bent valves? any care to throw there 2 cents in what i should do next... checked for fuel and spark, got both. timing belt was pretty cracked up due to wear im guessing but didnt break. engine will crank very slowly and thats it
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Old 11-15-2012, 06:54 PM   #2
Scooby Specialist
Member#: 316296
Join Date: Apr 2012
Location: Metro Detroit
[email protected] on 29psi


If you skipped timing and heard some bad noises you most likely put the valves into the pistons. These are interference motors which means the valves will hit the pistons if the timing is not correct.

New valves, guides, seals at the bare minimum. Other things could be damaged as well like pistons, buckets, cams, sometimes even the cylinder heads.

You need to disassemble your engine to further determine what needs to be replaced.
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Old 11-16-2012, 06:15 PM   #3
Scooby Specialist
Member#: 97043
Join Date: Sep 2005
Chapter/Region: TXIC
Location: Tomball Tejas
08 STI
02 Z28 - project


Pull the heads off, pull the valve covers off, examine EVERYTHING you can see at this point. Good time to pull the oil pan off and check for metal that may have gotten sucked into the oil system.
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Old 11-17-2012, 11:59 AM   #4
Scooby Specialist
Member#: 217563
Join Date: Jul 2009
Chapter/Region: South East
Location: Eden NC
2006 Sti 12.68 @ 108
321WHP 422WTQ dynojet SAE


Pull the front covers off the car and check timing. If off, then set it, and see if the car will crank. If the car cranks then put a vacuum gauge on it and see what your vacuum is. If the needle is nice and steady at idle, then nothing is wrong with the valves, if the needle is bouncing then you bent the valves.

But I agree with the other posts, if you heard some bad noise, then most likely something is damaged internally.
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