Need help with injector change problem

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larry33kc

Well-Known Member
Joined
Aug 19, 2001
Messages
1,714
I bought a set of 120 trick flow injectors from a member here. I swapped from a set of 83 semiens deka injectors.
Installed the injectors and changed the cc's in the BigStuff3 to 1260 cc's as per trick flows site.
I start the car and it was at 15.9 AFR through out the rpm range and I developed a miss under load. It idled fine it was just lean.

I changed the plugs and it started and ran fine even under a load on the trans brake, so I thought it was fixed and just a fouled plug. So I let it idle to warm up to change the oil. I go to drive it and it's missing again. Now it is in the low 11's AFR and now it doesn't seem to change no matter what I set the injector cc's at. I have had it from 1100-1260. And I also have changed the pulse width with no change.
I even did a compression check to be sure it's not something with the engine.

I wish I still had my 83's to swap back to but I had to sell them to upgrade.

I am lost here, short of taking them out and sending them off to get them looked at, I don't know what else to do. They was supposed to be cleaned and flow as per the seller.
Any ideas would be great.

Thanks Larry
 
Trade you my Siemens 72's ....lol

Maybe someone local to you has a setup to check them on

Bryan
 
Ya that wouldn't help me. Thanks though

I was kidding about the injectors...:D

What I meant was maybe someone local to you has a car setup to install your 120s and test for you. Good luck

Bryan
 
Oh ya it's all good man. This thing has just taken my sense of humor away.
It wouldn't be if I had money I would just pay to get it tuned and fixed. But I'm poor white trash

Ya I would love to have my old injectors back right now just to eliminate the problem. Or if someone had a set of 120's I could barrow.
 
Oh ya it's all good man. This thing has just taken my sense of humor away.
It wouldn't be if I had money I would just pay to get it tuned and fixed. But I'm poor white trash

Ya I would love to have my old injectors back right now just to eliminate the problem. Or if someone had a set of 120's I could barrow.

Hey I know the feeling all too well, I have had tons of issues with mine !!!!!! Im looking to go with 120's myself, looking at Racetronix injectors due to the cost.........I would love to have some atomizers but thats not going to happen. Maybe Cal can help. Good luck

Bryan
 
Bryan, I'm with you on the atomizers. That would be the ticket there but WOW I don't have enough stuff to sell to get them.
 
Chuck you was getting closer on the list of things to do with these if I couldn't figure them out.
 
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