Hi Guys,
looking for a bit of advice.
My '79 BJ40 has recently developed a problem with excessive black exhaust smoke during a certain situation.
It seems the car will start fine first start of the day and run clean to wherever I may be heading. If I stop for a short time and resume my journey with a warm motor re-start, the black plumes of smoke will begin under any amount of acceleration.
The black plume disappears after a couple of kms and I do seem to be able to moderate the black smoke output by feathering the accelerator particularly on level/downhill stretches until it clears totally.
The motor has had reconditioned injectors about 12 months ago, injector pump diaphragm replaced about 18 months ago, air filter new about 12 months ago. I run a fuel additive (always have done) and fuel is from the same source as normal. This issue has only started the last few weeks and doesn't align with any work I've done on the car.
It appears from the colour of the smoke to be an overfueling issue?? Maybe the IP not freely operating??
I am about to run a bottle of the Liquid Moly Diesel purge through the system but before I go ahead thought I'd check with the knowledge base here for any advice.
Regards, Neil.
looking for a bit of advice.
My '79 BJ40 has recently developed a problem with excessive black exhaust smoke during a certain situation.
It seems the car will start fine first start of the day and run clean to wherever I may be heading. If I stop for a short time and resume my journey with a warm motor re-start, the black plumes of smoke will begin under any amount of acceleration.
The black plume disappears after a couple of kms and I do seem to be able to moderate the black smoke output by feathering the accelerator particularly on level/downhill stretches until it clears totally.
The motor has had reconditioned injectors about 12 months ago, injector pump diaphragm replaced about 18 months ago, air filter new about 12 months ago. I run a fuel additive (always have done) and fuel is from the same source as normal. This issue has only started the last few weeks and doesn't align with any work I've done on the car.
It appears from the colour of the smoke to be an overfueling issue?? Maybe the IP not freely operating??
I am about to run a bottle of the Liquid Moly Diesel purge through the system but before I go ahead thought I'd check with the knowledge base here for any advice.
Regards, Neil.
Last edited: