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Miss firing and back firing GQ V8

Tech Talk for Nissan owners.

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djr320kw
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Miss firing and back firing GQ V8

Post by djr320kw »

I have 90 GQ with a 305 Chev. The motor is standard except for a light cam on it. It runs of pure LPG. I currently live in Penrith, Sydney. On the weekend I went up the blue mountains to lithgow and oberon. While up there the car felt slugish and it miss fired and back fired in 4th and 5th gear on the smallest inclines where in penrith it would just power up not needing to go back to 4th or 3rd.

I will know more next week when I start driving to TAFE everyday but it did feel better when I was back home. What is the couse of this?

Is it the altitude. Lithgow is about 1100 metres above sea level. If so how can this be fixed? Thanks
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Post by turps »

Probably a better place to ask this is in general tech as it doesent sound like it is a problem with any nissan bit. As not as many poeple look here. Plus there is alot of fj40 guys with V8's they maybe able to help.
THOUGHT FOR THE DAY....
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Post by Hoonz »

could be difference in altitude ... timings out?

my bike runs good down here .. but when we get to the top of the mountains its a bit off and noticeable
H( * )( * )NZ loves B( * )( * )BIES
if a fat lady falls in the forest do the trees laugh?
[quote="RUFF"]although i didnt mean to, i squealed like a girl :armsup:[/quote]
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Post by bazzle »

Regulator diaphram.

Bazzle
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Post by Bingham »

air thins sufficating it?????
2015 200 Series Gx TTD - ................ Fark 3L's -
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Post by Hoonz »

pretty much .. not getting a clean burn
unburnt fuel going through ... hot exhaust go bang
H( * )( * )NZ loves B( * )( * )BIES
if a fat lady falls in the forest do the trees laugh?
[quote="RUFF"]although i didnt mean to, i squealed like a girl :armsup:[/quote]
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djr320kw
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Joined: Sun Oct 31, 2004 10:15 pm

thanks

Post by djr320kw »

Thanks guys I will keep looking around for a solution
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Post by patrolmad »

Sounds like a typical Chev to me. My ski boat has never been any different!!!!!!!!!!
Patrolmad
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