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Location:
Perth
Registered:
October 2003
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1JZ-GTE Got Smoke? Please share experiences and solutions
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Mon, 12 September 2005 08:02
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Following on to KOFFEE BLACK's thread:
The two engines I have had in my landcruiser (JZZ30 type) 40,000km and 80,000km have both blown smoke when deccelerating and braking, usually when pulling up to traffic lights with lots of people around 
I have had the same turbo's on these engines with approx 40,000km on them and of course same exhaust 3.5", intercooler etc. I have two of the different generation PCV valves, changing to either one made no difference, smoke still there.
I have noticed if the car is driven regularly the smoke will be half as bad as compared to not driven in a week.
To get the car finally engineered with the 1J in it ive had to recently fit a cat converter. I bought a 3" highflow and modified it to fit into my 3.5" system which only had 1 high flow muffler. Low and behold with the cat fitted the smoke has completely disappeared in all situations. I can only put this done to the super heating of the exhaust gas in this region somehow burning the offending oil alot better ???
So the reason I have started this thread is to try to help others with the same problem, maybe if you have modified your exhaust this is a problem, ive also read making changes to the inlet side of the engine has caused this problem to come and go.
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Location:
Newcastle, Australia
Registered:
March 2005
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 01:38
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I notice with my 1J the AFR guage reads rich as a bitch when I back off the accelerator sharply, so maybe yours is doing the same, resulting in the smoke/unburnt fuel?
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Location:
Perth
Registered:
October 2003
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 03:34
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Unburnt fuel is black.
My smoke is white.
Another point is my engine doesn't have any oil useage issues.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 03:53
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isn't white coolant?
blue = oil
black = fuel
white = coolant?
BTW ribfeast, my car goes rich when I back off for a second as well (wideband o2 tells me).
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Location:
Campbelltown
Registered:
November 2003
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I supported Toymods
Location:
Adelaide
Registered:
July 2004
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 04:26
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I was getting the puff of oil smoke when i stopped at traffic lights, then changing to a decent semi synth oil that was thinner i.e. from 20w-50w to 15w-40w has stopped all that, no more smelly oil and no more smoke at lights
its great 
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Registered:
October 2004
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 06:06
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When i first had an oil change done it was with a fully synthetic oil and the car used to smoke (white) ive since changed to a thicker oil and it hardly smokes at all now.
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I supported Toymods
Location:
Sutho/Hills NSW
Registered:
September 2002
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 06:15
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im with the above, try some different oil.
i was running 15 grade now at 10 and if i hold idle at 1500 i get some smoke but thats the only time. 15 grade i didnt get it
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Location:
Perth
Registered:
October 2003
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 07:19
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White/blue whatever geez, it's oil smoke.
Coolant is steam anyway not smoke, damn chris you picky bastard
Well I don't need to worry about the oil smoke cause as I said my new cat converter solved the problem.
Damn these 1JZ's are random, some of you guys used thicker and it stopped and some used thinner. This is the point of the thread, lets see how many more solutions we can get going
So far:
- Put a Cat Converter on if you don't have one or removed yours
- Use thinner oil
- Use thicker oil
- Check PCV
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I supported Toymods
Location:
Adelaide
Registered:
July 2004
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 08:22
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well I am just chuffed mine is all good now
but yes
ideas people
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Location:
Perth
Registered:
November 2004
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Re: 1JZ-GTE Got Smoke? Please share experiences and solutions
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Wed, 14 September 2005 11:38
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When I start my car after its been sitting for a while I sometimes get a cloud of white smoke that disappears pretty quickly. I think its the valve stem seals, no smoke underload or idling at the lights.
I used a heavy oil stabiler (wasn't Morey but simular) can't remember wat brand and it reduced it heaps. Only a little smoke on startup.
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