Join Date: Dec 2007
Location: Merritt Island, FL
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Finally got back to the car after some business travel and taking care of some neglected household tasks - had to get the right mental attitude before diving in again.
Compression and leakdown tests indicate bad ring seal - compression varies from 125-160 and some cylinders's leakage is as much as 25%. Engine has to come out. With that established, I ran some tests to make sure the newly fixed motor (when it IS newly fixed) would start/run with no issues -
Pulled the plugs and they are really black - While checking timing (still good) and the coils for spark, noticed raw gas shooting out the spark plug holes! Bad Aeromotive regulator is allowing leakage into the manifold from the reference port. OK, that explains the rich condition - and maybe the bad ring seal. I am now officially worried about the whole bottom end, but really don't think that there has been very much gasoline dilution of the oil , as oil level has not risen significantly, and no gas smell in the oil. The car runs so badly with a leaking regulator that I'm sure there has been very little running time in that condition, but I'm now anxious to get the engine out and torn down to asses damage.
As if that isn't enough, I continued a thorough test of the EMS. After pulling the fuel pumps' power and checking coils, found that coils for cylinders 3 and 5 are not firing. Coils are not the issue as swapping with known good coils is no help. The LS truck coils (even the ones swapped from bad to good channels) are still producing angry purple sparks. Scoping directly on the Haltech harness shows no signal on the bad ignition channels - Rebooting the ECU and reloading maps and firmware no help. Removed the J&S from the circuit and still no help. So ECU goes to Haltech for repair. That probably explains a rather rough time I had with initial setup and tuning. I think my PS2000 was a little wonky from the beginning.
The devil car is certainly living up to its reputation, but it will not beat me.
"Speed Costs - How fast do you want to spend?"
'02 GGP L-Tuned IS300
3.4 GE Stroker/BW EFR9180/MS3Pro/J&S/V160/Tilton/Supra 3:13/Tein/HRE