Need some help with a 89' BII with a 2.9v6

[Tedybear]

Welcome to my world.

Nice place...but who did the decorating?

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[holyford86]

it wasn't me. whoever did it had horrible taste...

 

[Tedybear]

Update:

I think we nailed it this time.

Replaced the two bunged up injectors, cleaned and installed new micro-filters on the other 4 injectors.

Now we still have a minor issue with the old 4 injectors "weeping" slightly when the system is under pressure, and it still is cold blooded to start up.

But once it got started up? It hit 'closed loop' and we backed it up and moved it forward. No issues at all. We also nailed the gas several times moving it...and this thing is taking off big time now. It actually lifted the front end up a good amount when I nailed it in drive.

The only side issue? We still have some smoke out the tailpipe....blackish/blueish and a bit stinky still. It's not to bad once it gets worked out a bit, I suspect it may have been burning off extra oil in the cylinders that where not firing correctly. (we coated the crap out of everything when we did the heads---with two of the 6 not getting enough fuel? Little chance of burning off the excess oil)

So it appears to be running pretty well at this point. A bit concerned about the smoke? However we also have under 1/2 tank of fuel...and a full bottle of Lucas injector cleaner, and a bottle of Duralube injector cleaner running in there at the same time. So time will tell a bit.

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[broughton88]

i have problem like this with my 88 ranger with 89 engine and 87 engine wiring harness

 

[greaseyfingers]

This thing is under my skin at this point.

Call it a "Quest" LOL.

I've ordered in a "Kit" including new o-rings/seals....and most importantly? The mesh filter. Not to bad of a deal, $18.00 for the kit, includes 7 of each item (in case one gets screwed up, there's an extra)

I'm going to attempt to get the injectors a good cleaning out. From the looks of it? Just the main rubbers and the filters should ensure 4 of them will work out. The weepy one? And the other one (just for giggles and grins) I'll give a good soaking in carb cleaner to de-gunk 'em. The website suggests soaking to remove and loosen the crap. Then come up with a small DC supply of some type in order to "fire" the injectors while hitting 'em with compressed air and carb spray. That should be more then enough to reverse blow the gunk out of 'em.

I've got a 7vdc supply, not to much kick...and I did a fast test with one injector I brought home with me. It fires the injector normally, even if it's a bit under powered. It'll do to allow me to clean things out.

We are talking a very large amount of rust/scale/gunk built up in the fuel rail. I'm hopeful that just hosing it out with carb cleaner with the injectors all removed will clean things out. If I had to guess? The truck was not run for quite a while, in order to get things that bad. Gas normally prevents steel from rusting inside-out..So I figure get it cleaned out, and fresh fuel..

Well...I'm off in a holding pattern until the injector "repair" kit comes in. Wish I could afford to just go with new ones. But at around $40bucks a pop? That's $240 I need to use towards front brakes and two tires.

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Where can you buy the injector "repair" kit?

 

[Tedybear]

Company on eBay was selling them. I did wind up replacing two injectors (same company/guy sold me the two rebuilt injectors for about $30 for the pair plus shipping). If memory serves, MrInjector was his eBay ident.

It's been quite a while sense I did this post, however the BII is still on the road and running fair.

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[greaseyfingers]

Yes, this is quite methodical, and one of few bona-fide plugged injector problems. Very clearly so, I might add. It's hard to argue with a rustbrick sitting on a workbench (and it kinda sounds like my RABS valve).

I'd suggest trying to find out where that rust came from. Replace whatever is rusty on the inside. You might get lucky at a junkyard -- I've seen 200+K mile 2.9Ls over 20 years old with bright shiny fuel rails (on the inside). I'd be afraid the tank was full of gunk. Of course replace the fuel filter. Probably replace the sock on the fuel pump if there is a lot of crud in the tank.

I would definitely replace the injector socks and O-rings since you clearly have the skills to do it, and the supplies are on their way. 2.9Ls don't cut injector O-rings like 4.0Ls do (aluminum fuel rail with not enough chamfer -- Vaseline works).

What's a RABS valve's function and where is it located?

 

[Tedybear]

What's a RABS valve's function and where is it located?

Most likely the 'R'ear 'A'ntilock 'B'rake 'S'ervo. aka RABS.

Ford mounted it in a really dumb location about a foot in front of the fuel filter on the frame rail and it's known for getting loaded with road crud. Get a few upstate winters with the road salt and such? Yep, you'll get a rust brick.

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