Rb20 Missfire ?

[johnny boii]

hey guys just bought a 32 skyline

i new the problem was there and it is this

when u go foot flat to floor or more then 3/4 after about 4k revs itll start missfiring/popin as such my guess was new coil packs wood solve that problem as it is a stock car with a FMIC on it and a pod but before 4k revs and if ur not ful throttle it doesnt do it and it idles fine please help

[wins_wbe]

check fuel pump mate, then your plugs...

[johnny boii]

ok sweet as i will change plugs tmoz thankyou

how do i do a check on fuel pump just check if there is a feed or?

[wins_wbe]

use the search function mate..

lots of threads regarding missfires and fuel pumps issues and how to solve it..

theres also DYI...

[monga]

Plugs or coilpacks. Pretty common with RB's, or the old fuel pump is getting tired. Replace your plugs first, then look at the coilpacks & fuel pump. I've got a spare set of RB pack's if you get stuck dude.

[NA_Goodness]

Pretty much plugs or coil packs. If it doesnt have an aftermarket pump, check that as well. Otherwise, it could intercooler piping, I've just fixed that problem in my car. Check them all in that order, because new plugs would be beneficial whether they are causing the problem or not.

[Wogan]

man i've had 2 missfire issues with my rb20 over the last couple years... whenever you mention a missfire on here you get a million people saying coilpacks.... and while it is a somewhat common problem with skylines, it was never the solution for me and it's not necessarily the solution for you.

my guess would be your crank angle sensor.. sounds very similar to when mine had problems..

but it's just that, a guess... could be a variety of things... best bet is take it to a garage that knows skylines and get them to tell you what the problem is.. will cost about 100 tops to find out what it is.. which is cheaper than trying 5 different things to fix it.

[double d]

hey guys just bought a 32 skyline

i new the problem was there and it is this

when u go foot flat to floor or more then 3/4 after about 4k revs itll start missfiring/popin as such my guess was new coil packs wood solve that problem as it is a stock car with a FMIC on it and a pod but before 4k revs and if ur not ful throttle it doesnt do it and it idles fine please help

hi probability its the tune mine does it at 6k but it has been tuned /de-tuned so id check your tuning

[johnny boii]

thanks for ur help guys i replaced packs and plugs and no more miss im preety sure it wasd the packs tho coz my plugs seemed fine