I need Help

[bvr463]

I need your guys suggestions on what could be wrong with my car, i have a 95 s14 with a rb25det inside... heres the issue, when the car goes into boost its suppters real bad, car is in boost but doesn't go anywhere, wideband shows the numbers its suppose to be at... Heres what im guessing it could be
coils,spark plugs(changed them but not to sure what the exact gap suppsoe to be) fuel pump, or maybe the way they wired car up before i bought it..

Please Help Me if you guys have any idea what it could be

thank you
ryan

[bvr463]

bump to the top

[nismoman]

I would start by checking the coils. Inspect them visually and check the impedance

[240sxrb25]

If fuel pump quits it will go lean. I bet its the plugs. When my plugs were not gapped properly this happened and the wideband looked correct...

[bvr463]

i just changed plugs about month ago, but cant remember what i gapped them at, what is the right gapping for a stock rb25det?

for the coils when measuring for impedance, what am i looknig for from what range to what range? Should i electrical tape or liquid tape the coils?

thanks
ryan

[st280]

I'm guessing coils, SAME thing happened to me like a week ago on my Sr... I just got new ones and swapped it out. All was good.

[bvr463]

thank you, i will try clean mines first and tape umm up and see what they do, if not i will order new ones and try them out

[bvr463]

Okay regapped plus to .80 and cleaned and taped up coils and still the same, goes into boost, but don't go anywhere :-(

[bvr463]

Some one pleaseeeeee help meeee, my beast runs like a teard

[nismoman]

have you checked your timing?

[Sileighty_85]

Originally Posted by bvr463

Okay regapped plus to .80 and cleaned and taped up coils and still the same, goes into boost, but don't go anywhere :-(

wow .80

try .026-.028 inch

[bvr463]

Okay I will, isn't .026 or .028 to small of a gap and spark

[nismoman]

Maybe he was measuring in millimeters .80mm is .031"

[Sileighty_85]

Originally Posted by bvr463

Okay I will, isn't .026 or .028 to small of a gap and spark

Nope, that about what I run on mine

Originally Posted by nismoman

Maybe he was measuring in millimeters .80mm is .031"

Thats still too big, its probably blowing out spark

[bvr463]

yes i meant in milimeters, sorry for the mix up... i have ngk bkr7e plugs inside, gonig to try to different things, try gap them to .026-.028 and try back to where the original plugs were gapped at 1.1mm. I will let you know what happens.

thank you for guys help, im hoping this will solve it

let you know

[bvr463]

Took car for a ride on 1.1mm gap, car runs good. Feels like there is a little power still missing, any other suggestions?

Thanks for ur help

[Face Man]

Have you checked to see if you have a boost leak anywhere. I had a car that was doing the same thing and I tried everything in the end I found an intercooler pipe with a pin hole rubbed in it.

[bvr463]

I'll go make a boost leak tester next week and let u know