View Full Version : I need Help
bvr463
01-02-2011, 03:50 AM
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
01-02-2011, 07:10 PM
bump to the top
nismoman
01-02-2011, 07:25 PM
I would start by checking the coils. Inspect them visually and check the impedance
240sxrb25
01-02-2011, 07:30 PM
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
01-03-2011, 02:06 AM
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
01-03-2011, 03:23 PM
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
01-04-2011, 12:21 AM
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
01-05-2011, 01:19 PM
Okay regapped plus to .80 and cleaned and taped up coils and still the same, goes into boost, but don't go anywhere :-(
bvr463
01-05-2011, 01:20 PM
Some one pleaseeeeee help meeee, my beast runs like a teard
nismoman
01-05-2011, 03:46 PM
have you checked your timing?
Sileighty_85
01-05-2011, 04:02 PM
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
01-05-2011, 05:44 PM
Okay I will, isn't .026 or .028 to small of a gap and spark
nismoman
01-05-2011, 07:18 PM
Maybe he was measuring in millimeters .80mm is .031"
Sileighty_85
01-05-2011, 08:27 PM
Okay I will, isn't .026 or .028 to small of a gap and spark
Nope, that about what I run on mine
Maybe he was measuring in millimeters .80mm is .031"
Thats still too big, its probably blowing out spark
bvr463
01-05-2011, 10:09 PM
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
01-06-2011, 10:46 AM
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
01-06-2011, 12:16 PM
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
01-06-2011, 01:05 PM
I'll go make a boost leak tester next week and let u know
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