Any suggestions as to why it's still running rough and shaky? I do have an exhaust leak between the cat and the y pipe though. Could that be the culprit? Or is it neither the injectors nor the exhaust leak that's causing this? Thanks in advance.

 

Are your vtc's grounded???....This will cause a shaky idle...My ve has always idled kinda rough..Even before i grounded the vtc's on it...

 

yes grounded the vtcs. The thing is that I'm gettiung the same injector problem feel that I had before replacing all 6.

 

Pinched o'ring maybe??

Were the injectors new or used??

 

they are used. I bought them from 93turbogxe 6 months ago.

 

Does it have a miss[dead cylinder] at idle or when driving???

 

you should try taking out your iacv and cleaning it out. mine was filthy inside and now i have a very steady idle.

 

Been there done that...I even put another one on there and it still idles a little funky...
My idle isn't jumpy,just a little rough..
It doesn't bother me that much anyway...Hell the thing has almost 300,000 miles on it... i guess it's entitled to a bad idle..

 

coils........?

 

point taken

 

Problem is clear.

 

Brian, Is it because they were stored away for so long? Because they were tested by the seller and the resistances of each injector was in spec.

 

Transit can damage them too when they are used as the coils are already weak from age and we know that packages are not always handled carefully.

sitting in the open (not in a sealed container to hold in the anti-rust chemicals) they are exposed to the moisture in the air which will cause rust and obviously a problem.
have you ohmed them out yourself recently?

 

the injectors are fine and in working order. They came out of my car before I upgraded to 370cc. They were just fine. Also brain their a lots of member that have had injectors shipped to them and we have not had any related problems I have had two sets of 370cc shipped to me.

 

I am sure he wasn't saying you shipped the guy bad injectors,the guy said the set of injectors sat for a while before he put them in,the little bit of fuel left in the injectors may have gummed up causing one or two of them to go bad...

 

the thing was they were kept wrapped in the bubble wrap still and were protected in my room which is not cold or too hot. this sucks. maybe injector cleaner?

 

Buy a can of crc airintake cleaner, remove your pcv valve. cover the large hole with a piece of cardboard with a tiny hole in it ( size of the tube that comes with the cleaner). Start your engine and idle it. spray the cleaner through the hole (1/4 can) replace pcv valve. run the car and it should clear up.

 

is it just the feelling that makes you think the injectors are bad? do you get the put-put sound in the tailpipe? maybe its something else

 

I replaced a single injector on my VG engine (brand new injector, not refurbished) and the car has just now (a month later) started acting like the injector is bad again. Strange thing is two days ago it started, yesterday it didn't happen. So the problem is on an off for me.

I'm replacing the fuel filter and PCV this weekend. Ever since gas stations around here switched to 10% Ethenol my '93 has been having these fuel related problems. My '98 has had zero problems.

I'll be keeping an eye on this thread to see if you figure out the problem. I'll let you know if what I do solves mine problem. I made sure to clean the intake manifold when I had it off but I didn't clean it very well.

 

ya my car runs like crap. really rough idle. so rough that you have to keep foot on the gas for it not to die. it also is weak and kind of has the put-put sound from the exhaust. the injector was bad and i was getting a code, tested the resistance of all the injectors. front 3 were ok, so off went the intake plenum. middle rear one was bad. brand new from autozone and got a seal kit. it runs worse now than with the bad injector. not throwing any codes nemore. have to throw in neutral at stop signs and while braking. guy up at shop told me to spray carb cleaner around till it idles a little better with someone holding the throttle and then go from there. tried it to no avail. any more suggestions? might be along the same lines as his problem but far worse i guess.
ps. this is gonna be its own post

 

yes i get the popping from the muffler under serious load.

 

if popping sound is only under load and not at idle my guess is a bad coil

 

I replaced my fuel filter and PCV today and it didn't solve the problem. Sometimes the car will "putt-putt" but you can only tell when you listen to the tail pipe. Sometimes the car with vibrate a litte as well when it putt-putts. But the problem is ittermitent so I'm not sure what's going on.

No doubt the problem will get worse and perhaps then I can tell what's up. Anyone have suggestions. This problem occurs when driving normally or idling.

 

I think we need to rename these cars the putt putt generation...

 

Any way to test for bad coils? I have no cracks on them.

 

Oh wait...I checked the car and at cold start ups, it also has the popping idle.

 

Ok take one off at a time and see if it changes the idle if it does not change the way it idles when you take coil off its bad.

 

Straight from a 93 FSM for VE30DE. This may be a better avenue... Primary voltage- 12; Primary Resistance- Approx. 0.8(@68 F); Secondary Resistance- infinite(@68 F). Hope this helps.

Not very familiar with Max injector internals, but most fuel injectors have an internal seal/s that cannot be replaced like the orings can. You will never(should never) find an injector that is not vac. sealed from a dealer. Ambient moisture can cause premature failure.

I'm just sayin'...

 

I just have a single coil in my distrib cap for my VG. At least I think that's where it is.

I'm thinking my injectors are OK. I think they're supposed to be around 10-12 ohms but I can't remember the exact range.

I'll take a look at the FSM for the VG and see if it tells me anything about testing the coil or possible symptoms.

 

Ignition 101...

 

Brillent!

 

Where is the johnson rod? Sometimes you need to retorque it to maintain the proper firmness...

 

In my pants??

I did this morning...

 

Are you getting any codes? I had a bad mass airflow sensor that was causing a very rough idle. I can't remember if it was making the popping sound, but it did register a fault in the ECM.

 

Hm.. Could the knock or O2 cause rough idle?

 

the SES light is not on......

 

Corroded Injector clips?

I cleaned my injector clips with electrical spray cleaner and a small file. Worked great!

 

were your injectors acting crappy before you cleaned thme?

 

Yes they were. Rough idle and hesitation. Seemed like one cylinder was cutting out.

 

It never is.