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R34 Misses A Beat On Hill

so_tred
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so_tred Proficient

so_tred

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When I park my R34 face up on my driveway at home (steep, but not too bad - see picture) it misses a beat every few seconds.

I hooked up a fuel mixture display kit from Jaycar and you can see when it misses it goes Lean then back to normal and the pattern continues..

I'm just wondering whether there's something wrong with my car or whether it's a design fault over the whole line of 34's (or atleast Series 1)

The car runs perfect in every other situation except this one..

post-26304-1174539889.jpg

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R34GTFOUR Mentor

R34GTFOUR

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does it only do it on your driveway or have you ever seen it do it on a flat road? Have you mucked around with the timing at all? Whens the last time you checked your plugs? Dirty plugs or plugs that have been gapped too close can cause what you are mentioning but the driveway shouldnt really effect that. My bros r33 does a simular thing at idle but it will do it on a flat surface, but i think that has something to do with the timing he has smashed into it.

R34GTFOUR Mentor

R34GTFOUR

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Posted (edited)
When it happens is your car low on fuel?

The pump is towards the front of the fuel tank!

yeah but on that driveway it wouldnt make that much of a difference, if he was on the fuel light for 100km then it started to it then maybe

i could be wrong but i dont think the fuel pump is at the front on the r34s, i only say this because i have a really steep downward sloping driveway and once i was really low on fuel and i couldnt get it started on the slope, i had to roll down to the bottom where it was flat and then it came to life.

Edited by R34GTFOUR
so_tred Proficient

so_tred

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what fuel pump do you have? if its stock how many km on the car? whens the last time the fuel filter was changed?

The stock fuel pump..car has around 35,000km & fuel filter only changed 2,000km ago.

Yo-Yo Grand Master

Yo-Yo

Posted
Posted (edited)

My Missus' driveway is ridiculously steep & my car starts normally as if it were on a flat surface

Mine's a series 1 aswell. Your car just might be a sped afterall :sorcerer: :glare:

Edited by Yo-Yo
so_tred Proficient

so_tred

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Beh! ^ :glare:

When it comes time to change my pod filter I'm gonna try putting my standard airbox back in because I actually can't remember the car doing it with it standard..we'll see how that goes I suppose.

GtrVspec Collaborator

GtrVspec

Posted
Posted

sort of off topic but my turbo sss does the same on my driveway and its on a hill. i was told it could be coz my pump is to the front of the tank and apprently fuel pumps need constant pressure in the lines and its missing coz its getting some air in the line? something like that.... mine doesnt seem to do it when ive just filled up but does when its either half or almost empty. also been told could be my quad throttle bodies not shutting completely dunno mite help..

so_tred Proficient

so_tred

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Tried putting my standard airbox back in but of course that didn't change anything - I just hoped it would for some reason.

I've been told it could be something to do with a "roll over" sensor? Dunno if the 34's have them or not..haven't been able to find any info..

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