new super fun problem after cam+head swap
Thread Starter
Teching In
Joined: Jan 2007
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new super fun problem after cam+head swap I have just put about 3000 miles on after a cam + head swap (TSP233/239 5.3l 2.5 stage heads) and it just started to hesitate above 4000K in 3rd and 4th gear while the engine is under load. It feels like there is no power for brief moments while the RPMS rise, almost like it is missing but with no backfire. I had the car tuned at a local shop after which I noticed black deposits building on the bumper above the tail pipes, also the spark plugs had some black carbon like deposits on them the last time I pulled them. I thought this was because of a richer A/F tune, but is this normal? Any ideas where to start trouble shooting would be greatly appreciated.
Thread Starter
Teching In
Joined: Jan 2007
Posts: 18
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I checked the cylinder compression the last time I pulled the plugs and all where well above specs in the service manual (180-190 if I remember correctly), I have not performed a leak down test however.
