Hey Guys,

 

Just Want Some Advice And Info On What Causes The Smoke From My 300????

 

Got Plent Of Mods Including Hybrid Tubs,intake,exhuast,andy P. Chip Etc....

 

She Only Smokes When The Revs Come Down From High To Around 2500rpm, Then Whoooosh, Its There, Like Slightly Black,blue Smoke.

 

I Know Am Over Fueling, But Just Thinking The Worst!!

 

No Smoke Under Load Or Going Thro The Gears, Just When De-accelerating???

 

Also No Smoke On Idle.

 

Cheers People.

 

Alan.

Is it blowing the dipstick out?

Is it blowing the dipstick out?

 

NO ANDY, NOTHING OUT OF THE DIPSTICK

Check the oil for a fuel smell. Does it smoke for a few seconds when started from cold?

Check the oil for a fuel smell. Does it smoke for a few seconds when started from cold?

 

NO FUEL SMELL IN OIL, AND NO SMOKE ON A COLD START

I Have Been Told That It Could Be The Valve Seals???

 

Could This Be Correct???

Valve stem seals is a possibility but would tend to smoke a little from cold. Doubtfully the turbos if the smoke is blue. Could be early signs of a cracked ring land on one of the pistons....

Valve stem seals is a possibility but would tend to smoke a little from cold. Doubtfully the turbos if the smoke is blue. Could be early signs of a cracked ring land on one of the pistons....

 

OOOHHHH!!!!!

 

THAT SOUNDS BAD?

 

IS IT????

Yeah you could say that :( This was exactly the same with Mac1's car and that turned out to be cracked ring lands. Good opportunity to fit forged internals and use the mods you have to their best though....

Valve stem seals is a possibility but would tend to smoke a little from cold. Doubtfully the turbos if the smoke is blue. Could be early signs of a cracked ring land on one of the pistons....

 

ALSO, WHEN SHE SMOKES, A LITTLE REV AND ITS GONE AND SHE CAN IDLE FOR EVER AND NO SMOKE. VERY STRANGE TO ME!!!!

Gotta admit its a strange one. See if it gets any worse I suppose...

Gotta admit its a strange one. See if it gets any worse I suppose...

 

OK ANDY, WILL KEEP AN EYE ON IT, THANKS FOR YOUR HELP MATE.

 

ALAN.

if you have had any work done on the head new seals might of been fitted, could be worn valve guides, try this, when warm rev to 5000rpm for about 15 secs, lower the revs to 4000rpm for 15 secs, then 3000rpm for 15 secs, then let idle for 5 secs and blip the throttle, let us know if it kicks out smoke?

if you have had any work done on the head new seals might of been fitted, could be worn valve guides, try this, when warm rev to 5000rpm for about 15 secs, lower the revs to 4000rpm for 15 secs, then 3000rpm for 15 secs, then let idle for 5 secs and blip the throttle, let us know if it kicks out smoke?

 

 

HEY RETRO WILL TRY IT TOMORROW, THANKS FOR THE ADVICE, BUT WHAT DOES IT RESULT IN???

 

ALAN

engine tuner put me on to it as a way to check the valves for oil suction through the valves, when i had the same sort of problem on a audi of mine with smoking on decel