Help!!!
In the Staging Lanes
Joined: Aug 2007
Posts: 62
From:
If you have spark and fuel it would try and start. Do as Craby suggested and spray some starting fluid in the throttle body. If it tries to fire then the injecters are frozen, try tapping on them or have them cleaned. If it's sat for three years, it's more than likely the injecters.
April 2011 ROTM
Joined: Mar 2009
Posts: 22,001
From: Tokeland, Washington
ROTM Winner's Club
you did a compression test on all the cylinders? i overlooked that part. 60lbs would indicate that that cylinder has a leaking head gasket or valves are not set right or valve is sticking.
Tech Droid
Joined: Aug 2005
Posts: 9,215
From: North East PA
If all cylinders are in reading in the 60 PSI compression range the engine is going to be very hard to get running. One possible thing that could affect compression on all cylinders would be a timing chain that jumped a few teeth, and now the valves are opening and closing out of sync with the pistons. The spark would still be good, but out of time, just like the valves.
Tech Droid
Joined: Aug 2005
Posts: 9,215
From: North East PA
The PCM determines the crank and cam position according to the low and high res pulses are generated internally by the opti, so as long as the opti is functioning properly the PCM is going to see both signals at the proper intervals and stay happy regardless of the relationship between the crankshaft and camshaft. Other engines that use physical cam and crank sensors would see the bad relationship and set codes. I also suspect that OBDII LT1 engines (96 and up) with a real crank sensor will pick up the problem also
Thread Starter
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In the Staging Lanes
Joined: Feb 2012
Posts: 34
So I pulled the timing cover, the timing marks lined up correctly. Timing chain is loose, but that shouldn't cause it not to start. I did get the new harness but haven't put it in yet. Car does not start on ether.
April 2011 ROTM
Joined: Mar 2009
Posts: 22,001
From: Tokeland, Washington
ROTM Winner's Club
re do the compression test and was it 60 lbs on all cylinders? i keep going back to thinking the opti failed. take the cap off the opti and see what things look like in there.