1. The car will rev when sitting still up to high rpms. but when im driving it and i get on it in first. itll go to around 3 grand. then i can sill push it but it sounds nuts then backfires. any suggestions how to fix that?



i also am running an open exhaust manifold. i know my ports arnt actuating but i didnt think that would make my car do that. and all emissons are removed along with tb mod.



2. i am leaking oil from the oil filter side of the engine. im thinking it might be coming from the o rings on the filter stand but is there any other common place for it to come from on that side?



3. my oil smells like gas. i heard it was common but id rather be safe than sorry. is this a big deal?



thanks for the help

My oil leak was from the filter pedestal o-rings. A bit of a pain getting a 10mm wrench on the nuts to remove it, but not too bad.



Gas isn't doing your oil any good. I change mine frequently.



So, under load the engine misfires around 3 grand? Could be inadequate fuel or weak ignition. Try new plugs. Wires okay? Could be "3800 RPM hesitation"? Check grounds.



Good luck!

wires are newer and plugs are brand new.

all my grounds seem good. i redid them when i put my motor in.

i'm just getting a little frustrated. because you can take it past 3800 to past 4500 but the motor sounds nuts then when you let off it gives a good backfire. it looses most power right around 3000

I suspect it may have something to do with your TB mod.

why would the t/b mod make it do that?

A little history is always helpful. Did it always have the problem, or did it start doing it right after you did some work on it?

i put the used "new" motor in with around 60k on it. and yes, it has always done it since i put the motor in. i dont daily the car so in the few times that i have driven it, it has done that.



keep in mind that i have the stock manifold on with no exhaust hooked up. im assuming that backpressure would help the motor.



the problem only happens under load. revs nice while sitting.



good cold idle. stutters a bit when the t stat is opening then clears right up and idles fine again.

Put the exhaust back on, you need back pressure

Yeah, no backpressure means your aux ports are staying closed. They normally open at 3800rpm, and if they're slow due to bad grounding you get hesitation. However, not having them open at all (since no exhaust means no backpressure) means you get fine performance until you hit the time they should be opening. Then it runs rich, has crappy hp, etc etc.

Its easier to jack the car up get a long extension and a swivel... takes alot less time.

You could try tying open your aux ports temporarily, then rev it up and see how it acts. If it runs better, then you know what your problem is.



Oil leak: it could also be coming from your oil cooler lines, they run on that side. Clean all the grime off, let the engine idle and look for leaking oil.





Also, no exhaust with just an open manifold? revving up to 3k? are you deaf yet?

yeah, im deaf now hahahah. the manifold studs to hook the exhaust broke off so im going to torch them out this friday and hook the exhaust back up

well you dont have to torch them out just take a punch and knock them out little by little takes a bit of time but pretty easy once you know what you doing

If any of the stud is left sticking out, lots of pb blaster and vice grips worked for me.

soo took the car out again today. just kinda tied the exhaust ports open. just around the top. still horrible stutter. sounds like crap. and is the slowest car ever. kinda sounds like fuel cut but the injectors are good.



i have no idea waht to do.



the problem again is around 3000 ish under load. the car will pull hard till 3000 ish then get kinda louder as in higher pictched and not want to pull hard at all.

kinda sounds like the secondary injectors arent coming on

should i swap my secondary rail out for another one? im real lost on whats going on. i thought it was the 3800 hesitation. but my grounds are all good. and then i thought it was ports not opening. but after i wired em open i realized that it wasent the ports. so do you think its clogged injectors or is somthing else wrong?

i think its more likely to be the electrical connection, but possible that they are clogged or stuck.



step one is to unplug the connector (secondaries are on top), have a good hard look at it, are the pins backed out? missing? next, find power and a ground and just tap the injector pins (doesnt matter which ones) the injector should click. if it doesnt click they its not working. if you have to do more than once, you may want to pull the 'circuit opening relay' to disable the fuel pump and then start it first, as opening the injector with fuel in the rail, goes into the engine.



if you dont find anything amiss there, turn the key on and check the injector wires at the connector, the black/yellow wire should have power, if it does not then you need to find out why (if the car is 86-87.5 its prolly the injector resistor), the other wire goes back to the ecu, and should not have power or ground while the injector is unplugged.

so i pulled the rail off and turned the key and the secondaries sprayed, so would that rule out a electrical problem? im so tired of trying to figure out what is going on.

its you cold start that makes it tac like that...as far as the backfire iv seen a few 2nd gens do it no biggie. but do put your manifold back on. your not gettin the right backpressure without it. sorry if its already solved im new. this is probly old