92 22re starts up and then dies in about 2-3 seconds. replaced the air flow meter with a new one. Same problem. The exhaust doesn't look right, very noticeably white. Been working on this for almost a month now. Any other ideas?

 

Fuel pressure regulator?

 

I'll look into it, thanks

 

It's been a while since I've worked on a 22RE. Maybe try putting a jumper wire between the BAT+ and FP terminals in the little box under the hood. I think it's on the passenger side. The small rectangle box with the flip up lid. It will turn your fuel pump on directly. If it stays running after doing this, troubleshoot your fuel pump circuit. The reason for my suggestion is because the fuel pump comes on for a few seconds at first and then stays running after the AFM or something else tells it to stay on. I don't remember exactly what does though. It's been a long time.

Good luck and please post up whatever you find. Dead end threads suck.

Scott

 

As aztoyman says.

"Runs a few seconds and quits" is the classic sign of a VAF-COR circuit issue. (Yes, even though you replaced a perfectly good part with a new one, you really need to diagnose the problem first.) Here's what I know about that circuit: https://www.yotatech.com/forums/f116...-quits-312747/

 

ok, I got it to run by dumping some more fuel into it and a can of Berryman's sea foam. Fuel guage at about a half tank. It ran pretty good for quite awhile, then it started running really rough, just sounded or felt like something was preventing it from running as intended. ( I'm not much of a mechanic, so forgive me for my descriptions) So I pulled the plugs and cleaned them off, maybe 8 months old but they were moist and carboned up. I sprayed some sea foam into intake and it started to run good again. I let it run for about an hour and all was good. There seemed to be a hesitation when I stepped hard on the throttle from a idle, but other then that it ran pretty good. I haven't been out today to check it out. I appreciate the head scratching from you guys. I'm closing in on the problem. I hope

 

Fuel pump seems to be working. I started it up this morning and it ran perfect! for about 3 minutes, which I was like wow it's fixed but then it just started crapping out. Now it doesn't want to build up any rpm's, just seems like something is clogged. But of course it could be an air mixture problem?

 

It can get expensive just throwing parts at it. Maybe follow a troubleshooting chart? This is a problem where you are going to learn a lot on how the systems work. It's hard for us to troubleshoot without being there. Any Check Engine Light? (codes)

If it ran great for a while, it "seems" like it's getting fuel. The basics still apply like a clean fuel filter and hopefully no crud on the fuel pump screen in the tank. Clean air filter?, No vacuum leaks? Quality cap, rotor and plug wires? My wife had an 86 that had the CAT plug up. That was after MANY miles.

When you say it runs good for a few minutes and then runs rough sounds like something wrong after it transitions from a cold mode to normal operating temp. My son's 91 did similar and it was the IAC. Fired up and ran good until it warmed up. Then the idle was all over the place and it would often stall.

Good luck troubleshooting and please let us know what you find.

 

Long shot here....
When my idle started to act up I checked all hoses and found nothing.
I turned to my idle screw...found it had turned itself all the way in somehow.
The o ring was not only in three pieces it was hard as rock.
.25c and back to purring.

Good Luck

 

After checking the electrical box that runs the fuel pump and determining that the pump does work, I went and checked the Circuit Opening Relay> Everything was as it should be. I had kept thinking about the gas in the tank, always kept wondering if it had anything to do with the fuel. But before I replaced the AFM it would run just fine for 2-3 seconds, so i would immediately rule out the fuel. And after replacing the AFM it would run, but really crappy, and then it would run for 15-20 minutes and I would turn it off and walk away and come back the next day and the same thing. It would barely run, just wouldn't or couldn't build up any RPMs. So I ended up draining tank and added about 4 gallons of premium and another can of Sea Foam. It sputtered and spit for quite awhile, and then it started to run better and then it ran for an hour. The next day, ran just fine. I didn't start it today, but I'm thinking it was water in the gas. I got this truck from my son, he just drove the truck and never really took care of it. So all in all, problem seems to be two fold, bad AFM and bad gas. Appreciate all the help. These 22re are really an interesting but fun motor to play with

 

I just got a 1990 running that had been sitting since 2011. I drained the nasty fuel, pulled the tank and flushed it. Stuck in a new pump and screen and replaced the fuel filter. While I had the lines disconnected I squirted carb cleaner in the lines and blew it through the system with compressed air until it came out clean instead of like varnish. I also found the vent line from the charcoal canister was plugged. Supply and return were just varnished up. After I filled the tank with fresh fuel I jumped the fuel pump at the diagnostic box and ran clean fuel through it. After that it fired right up. I really thought I'd have to replace or send out the injectors. I got lucky there. NO WAY it would have run without getting the system clean.

If you think it had water in the fuel, I'd replace the filter if you haven't already. Yeah it sucks to get to.

Cleaning the throttle body before you change spark plugs might help. A valve adjustment might smooth things out if they are too loose or especially too tight. Basic stuff like making sure ignition timing is correct.

They ARE good engines. High mileage timing chains and head gaskets failing (usually from an over heat) are the weak links. I had two run over 450K miles.

I hope your clean fuel solves your problem. Thanks for posting what you found.

Scott

 

Id start with replacing fuel filter.