Need Help! 95 silvia SR, blue smoke? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sil94 · 06-15-2011, 09:53 PM

i have a 1995 nissan silvia, SR20.
-LINK system ecu
- GT3076R 60A/R
- BC 264 cams
- 740cc injectors
-44mm w/g
-255 fuel pump, NEW Z32 fuel filter.
- splitfire coilpacks
-fmic
- stock bottem end, and head except the cams.

just had the car dyno tuned and is at 16psi, 360 whp.
and all parts have less than 1000 km on them...

MY ISSUE IS; im going to be very thorough so you get a better idea-

had the car tuned a week ago have been driving it and no issues, even when im driving it hard. then today it was driving fine until driving for about an hour, came to a stop and blue smoke was billowing out the exhaust, rev it and less comes out, once back to idle a thick cloud again.

drove it up the road and pulled over, but was not blowing blue when driving, came to a stop and shut it off. let it sit for 5 mins, started it and the idle was chuggy, not jumpy just a bit hesitant. and again slightly blue smoke.

i drove it back home, stopping multiple times, idle would stay strong at around 1000, and sometimes when stopped would again be chuggy. no blue smoke, except for 1 time i came to a stop. so this is doing it intermitently. no smell, and no smoke in the engine bay. it boosts fine, through all gears, except when it comes to high rpm it is slightly hesitant, sometimes in 2nd when boosting, sometimes in 3rd( it governed at 5 and backfired) it did this once but was fine other than that 1 time.

got it home in the garage, wasnt smoking, no chuggy idle, seemed ok..

i pulled the plugs and they are all good.. will perform a compression test tomrw to make sure all is ok.

only things i could think of is
TURBO SEAL( turbo has no shaft play)
or VALVE SEAL???

ANY HELP WOULD BE GREATLY APPRECIATED, THANKS GUYS!!

sil94 · 06-16-2011, 08:41 PM

well i think ive figured out the issue... i believe its rings

did the compression test, very low.
cyl 1- 125
2- 120
3-120
4-125

did a wet test with oil in the cylinder
cyl 1- 160
2- 150
3-140
4-150

pretty big difference, so i figure this is my issue and i guess a rebuild is coming sooner than expected... maybe a stroker??

06-15-2011, 09:53 PM	#1
sil94 Join Date: Apr 2009 Location: calgary Posts: 11 Trader Rating: (0) Feedback Score: 0 reviews	Need Help! 95 silvia SR, blue smoke? i have a 1995 nissan silvia, SR20. -LINK system ecu - GT3076R 60A/R - BC 264 cams - 740cc injectors -44mm w/g -255 fuel pump, NEW Z32 fuel filter. - splitfire coilpacks -fmic - stock bottem end, and head except the cams. just had the car dyno tuned and is at 16psi, 360 whp. and all parts have less than 1000 km on them... MY ISSUE IS; im going to be very thorough so you get a better idea- had the car tuned a week ago have been driving it and no issues, even when im driving it hard. then today it was driving fine until driving for about an hour, came to a stop and blue smoke was billowing out the exhaust, rev it and less comes out, once back to idle a thick cloud again. drove it up the road and pulled over, but was not blowing blue when driving, came to a stop and shut it off. let it sit for 5 mins, started it and the idle was chuggy, not jumpy just a bit hesitant. and again slightly blue smoke. i drove it back home, stopping multiple times, idle would stay strong at around 1000, and sometimes when stopped would again be chuggy. no blue smoke, except for 1 time i came to a stop. so this is doing it intermitently. no smell, and no smoke in the engine bay. it boosts fine, through all gears, except when it comes to high rpm it is slightly hesitant, sometimes in 2nd when boosting, sometimes in 3rd( it governed at 5 and backfired) it did this once but was fine other than that 1 time. got it home in the garage, wasnt smoking, no chuggy idle, seemed ok.. i pulled the plugs and they are all good.. will perform a compression test tomrw to make sure all is ok. only things i could think of is TURBO SEAL( turbo has no shaft play) or VALVE SEAL??? ANY HELP WOULD BE GREATLY APPRECIATED, THANKS GUYS!! Last edited by sil94; 06-15-2011 at 10:53 PM..

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06-16-2011, 08:41 PM	#2
sil94 Join Date: Apr 2009 Location: calgary Posts: 11 Trader Rating: (0) Feedback Score: 0 reviews	well i think ive figured out the issue... i believe its rings did the compression test, very low. cyl 1- 125 2- 120 3-120 4-125 did a wet test with oil in the cylinder cyl 1- 160 2- 150 3-140 4-150 pretty big difference, so i figure this is my issue and i guess a rebuild is coming sooner than expected... maybe a stroker??