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http://s4.zetaboards.com/lexusaltezzaclub/topic/1148393/1/#new



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Big Problem Car Blew Up?
Topic Started: Mar 5 2010, 07:18 PM (603 Views)
12die4
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Mike
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Driving to get fish and chips. Car was back firing everytime i change gear. came out of a round about boosted it. then as soon as i let off gas it started to feel like a was in to higher gear i was in 5th.. so changed down to 4th still to high changed down to 3rd still to high pulled over to side of road car turned off. Now i can turn car on and will run them shut off after 2-4 seconds.. blows black smoke and sounds like a vaccum cleaner sound turbo blown? or what? any help PLEASE!!!
Turbo 3sge
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alimac
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Canterbury, NZ
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Could have dropped a valve
Yellow RS200z 6MT
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greeneyes
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Targa Master
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Head gasket quite likely, which is robbing you of power on two cylinders hence it feels like too high a gear. If flame flicked under the head gasket between two cylinders it could backfire.

Start the usual blown head gasket routine and see how you go- check for water in the oil, oil in the water, compression going into the radiator... although best of all would be a leak-down test.

Failing that, how about a bent valve as alimac said? Do a compression test while you're hunting the head gasket, although a leakdown test will show the bent valve also.
The Girl's KE70-
http://www.rollaclub.com/board/topic/42407-the-girls-ke70/
How NOT to build a rally car-
http://www.rollaclub.com/board/topic/64027...ld-a-rally-car/
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alimac
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Canterbury, NZ
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After thinking about it I'm inclined to go with Keith on the head gasket. Possibly leaking between 2 cylinders, which probably wouldn't necessarily mix the oil and water, but could account for backfiring and black smoke(unburnt fuel)
Yellow RS200z 6MT
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madaltezza
Sleeper
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do a comp test or check intercooler pipes chack that has not poped off
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2ToneTezza
Custom
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Would definitely check the piping for an air leak, I had it happen on my r32, ic connector had popped off under boost which screws your mixture( hence black smoke).
'99 Altezza RS200Z- project car
'04 1240cc Nissan March rocketship
'01 KTM520EXC motard
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