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ok ill make this quick. my girl just picked up a 92 civic D15B7, the thing smokes like crazy from about 10 seconds after u start it up whenever you hit the gas it looks like a DJ's smoke machine.
when we got the car it was low on coolant, figured bad headgasket. i compression tested the engine, 180 on all 4 cylinders with the throttle plate closed. i took the head off today, found NOTHING obviously wrong with the headgasket. i DID however notice that 6 of the 8 exhaust valve stems were coated with THICK buildup and looked shiny like they were wet. cyl 1 2 3 all had thick oily carbon sludge in the exhaust ports, cyl 4 is pretty dry. i also noticed that there seems to be a small puddle of oil in every valve relief on all the pistons, although the pistons seem almost unreasonably clean for teh amount of shit on the valves. ALSO, the FACES of the valves were almost all covered with thick carbon buildup (in 1, 2 and 3) to the point that they looked like the were domed out rather than dished in. i have the exhaust valves soaking in degreaser, gonna try to clean the shit off them.
when the car was still together, the smoke increased with engine rpm and was ALWAYS there, not sometimes, the more pedal, the more smoke. so what im wondering is....does anyone have any insight? the only thing im lookin at now is the valve stem seals, since the valve stems looked liek they were still wet with oil, and had so much shit built up on them, especially the backsides. the intake valves are relatively clean. can stem seals cause an engine to smoke liek that though? can there be something wrong with the headgasket that im not seeing? (its one of the old style graphite ones) oh and it is a fel-pro brand gasket so that means that someone was in there already. what else can cause smoke like this with good, even compression?
i guess that wasnt as short as i thought it would be lol, let me know if anyone has any suggestions
when we got the car it was low on coolant, figured bad headgasket. i compression tested the engine, 180 on all 4 cylinders with the throttle plate closed. i took the head off today, found NOTHING obviously wrong with the headgasket. i DID however notice that 6 of the 8 exhaust valve stems were coated with THICK buildup and looked shiny like they were wet. cyl 1 2 3 all had thick oily carbon sludge in the exhaust ports, cyl 4 is pretty dry. i also noticed that there seems to be a small puddle of oil in every valve relief on all the pistons, although the pistons seem almost unreasonably clean for teh amount of shit on the valves. ALSO, the FACES of the valves were almost all covered with thick carbon buildup (in 1, 2 and 3) to the point that they looked like the were domed out rather than dished in. i have the exhaust valves soaking in degreaser, gonna try to clean the shit off them.
when the car was still together, the smoke increased with engine rpm and was ALWAYS there, not sometimes, the more pedal, the more smoke. so what im wondering is....does anyone have any insight? the only thing im lookin at now is the valve stem seals, since the valve stems looked liek they were still wet with oil, and had so much shit built up on them, especially the backsides. the intake valves are relatively clean. can stem seals cause an engine to smoke liek that though? can there be something wrong with the headgasket that im not seeing? (its one of the old style graphite ones) oh and it is a fel-pro brand gasket so that means that someone was in there already. what else can cause smoke like this with good, even compression?
i guess that wasnt as short as i thought it would be lol, let me know if anyone has any suggestions
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