Katalyzt13

I had to specially make a trip to buy the correct intake gasket, it is matching.

I didn't know there was anything wrong with using platinum plugs - that's what I used for years before I put this engine in here... The distributor is new. I don't know what a leak down check is, but I'll read up on it. I won't know what the operating fuel pressure is or how to measure it, so I'll do some googling and youtubing and get back to you eventually.

I'm posting a lot because I don't know very much, but y'all's answers have really been helping me. I'm trying to figure out why my truck is running so rough, now it is surging and bucking when I accelerate. Here is what I've done: 1. Rebuilt a '96 HO 4.0 I6 and replaced the existing '87 4.0 I6. 2. Deleted the EGR system 3. Changed up to a PCV open loop system. 4. Replaced the muffler and tail pipe. 5. After the muffler and tail pipe the truck briefly ran really good until the gas dropped down to about 1/8 a tank or a little less. 6. I thought it was the tank or the fuel pump, so we took the tank off and cleaned it out and replaced the pump. We ended up having to patch a small hole in the tank, anyway. This didn't fix the problem. I've checked the indexing of the distributor, new 2x platinum plugs, etc. Any ideas?

thanks, not sure what happened. I figured it out - can this thread be deleted?

Are these: Direct replacements for these:

Man, Cruiser54 has been my hero through most of this process - thanks for the advice!

I'm trying to figure out what is causing a fairly extreme symptom in my truck. I've just finished putting a rebuilt engine in there, but still have some issues. For the record, I had been driving my truck with bad rings and other engine problems for quite a while before putting a new engine in, so I assumed a lot of symptoms were related. I had to put new injectors in my truck before the rebuild and had put some of those cheap plastic bodied injectors in there before. Now, my truck seems to have problems with acceleration and deceleration. It runs really rough when accelerating or decelerating, it has backfired a few times when decelerating but it runs fine when I'm maintaining a speed. My working theory is that it is either the injectors or else I need to replace my distributor. Does anybody have any experience or info that would help me?

I'm in Cedartown, south of Rome, GA

So, I got everything hooked up and running, but I'm having problems - I think with my injectors. I had replaced my injectors with some after market ones right before the rebuild, hadn't really tested them. Now, when I'm accelerating or decelerating I'm getting some roughness in the running and some backfires. If I am maintaining a speed, I am fine. Is this my injectors?

coming along

No smog or inspections.

I like that!

What are the vacuum hose diameters I would need to buy in order to replace all the vacuum hoses in a Jeep Comanche 1987?

So, it should have a line running to my intake?

What is this black canister? Can I rip it out?