possible fuel problem? wont rev up. coilpacks?

[boostbanshee]

every once in a while il be driving and my car with go to an idle and if i try to push the gas it wont rev back up, i will have to wait for a few seconds and that it will be fine for a while , it seems like it isnt getting fuel or isnt burning the fuel, my injector seals were leaking and i bought new seals but this didnt help, i noticed there was a hairline crack in the bottom of one of my injectors also. when i put the car to the floor it kinda pops and misses when its trying to rev up. i feel that maybe its my injector or coilpacks not producing enough spark? the car has good power and good compression, starts great but sometimes will just die to low rpms for a few seconds until it catches its fuel i think? it always stays running though. any help would be great

[nelsonmxmarc]

First and foremost, replace the faulty injectors. You said it yourself, the engine is great, runs well and has good compression - you dont want to upset this by introducing something as simple as a faulty injector. If they're stock GTR injectors, this is common, so rather than replace them with oem used, buy new 550 or 700's depending on what you foresee in the future. It could very well be that this leak is significant enough to cause a misfire. As for the pedal issue, i can also assume this is at fault too.

Are you running a wideband? At idle, you may see lower (richer) afr's. As fuel is being dumped to atmos, O2 senses a leaner condition, enriching fuel tables and pumping more gas. High afr's is result of other cylinders flowing more than required to compensate for the leaky injector.

When this happens, you can get cylinder wash which is terrible for the rings/pistons and bore. This results from excess fuel dumps - which alternatively cause fouling and misfires. If you put the pedal down and it sputters like poo, then it's likely an enrichment issue. It takes more than a split second of air volume to compensate for all this extra fuel, and when its finally burnt out, begins to run normally once again.

Also, could be a vacuum leak.

[boostbanshee]

if i was to get 550cc injectors would i have to tune any diffrently? and also how would i check or find a vacuum leak? thanks

[actionbstard]

yes you will need to have a reflash or tune

[boostbanshee]

ok, id like to keep the stock injector size because no one in nb can tune and id have to take the car far. i dont have alot of money atm

[bobbo]

There are reasonable tuners in your area... Shediac to be exact. As far as finding vacuum leaks the easiest way is to get a can of MAF cleaner (preferred), or brake cleaner and spray all suspect areas. If there is a leak your idle will increase.

[GTRADDICT]

There are reasonable tuners in your area... Shediac to be exact. As far as finding vacuum leaks the easiest way is to get a can of MAF cleaner (preferred), or brake cleaner and spray all suspect areas. If there is a leak your idle will increase.

Don't know about shédiac but there is one in Cap pélé. JD racing. Seen his work and got a drive in his work. Good guy. Don't rush him. Small town guy.

[boostbanshee]

ya i used to have a boosted civic hatch and i found he couldnt tell me much