89 b2 no power

[tcoe99]

I was cruising around at work with my little 89 4x4 5spd and everyone was admiring how awesome it was and how good it was running. Then all of a sudden it fell on its face. 0 power to even take off. Can’t get it to go over 30km/hr.
ive put new
Plugs/wires. Spark all 6
Fuel pump/filter
Robbed every sensor off my parts b2
Have 34psi fuel pressure-bounces between 30 and 40 as I’m driving it
Vacuum strong enough to suck my finger into any hose.
no fuel past the regulator
And fixed numerous broken/melted wires.
should I move onto timing or injectors? I’m going insane chasing this lil gremlin!
Thanks for any help on this guys!

 

[bf750]

drop in a v8

 

[gaz]

tcoe,

How does the engine run while the truck is parked in nuetral .(

 

[tcoe99]

drop in a v8

If I had the time and money that would be the perfect option. But sadly not yet

 

[tcoe99]

tcoe,

How does the engine run while the truck is parked in nuetral .(

I idles smooth. Just when it’s under load

 

[bf750]

Scan it for codes.

 

[tcoe99]

Scan it for codes.

I’m hoping to pick up an adapter soon to do that. I just assumed it would be a spark or fuel issue. The more I look and read it could be any number of things

 

[Uncle Gump]

@tcoe99

Google testing for restricted exhaust... using a vacuum gauge.\

See what that shows you.

 

[tcoe99]

@tcoe99

Google testing for restricted exhaust... using a vacuum gauge.\

See what that shows you.

I should add I removed the exhaust already. Just checked the timing. Looks like it’s at 11/12 with the spout out over 22 with it in

 

[Bird76Mojo]

It does sound like a mostly clogged cat.. Same symptoms as my old 86 Ranger when it clogged up.

Have you visually checked the throttle butterfly is opening fully?

 

[tcoe99]

It does sound like a mostly clogged cat.. Same symptoms as my old 86 Ranger when it clogged up.

Have you visually checked the throttle butterfly is opening fully?

I have not. But I will. I gave the aic a good clean and cleaned up the ground to frame last night. Seemed to have improved it. I’m driving it today and getting similar symptoms but not exactly the same.
I can only give it 1/2 throttle or it sputters and chokes out. The longer I drive it the worse that gets

 

[tcoe99]

Maybe it’s the tfi? Pretty temperamental little thing but oh well

 

[tcoe99]

It does sound like a mostly clogged cat.. Same symptoms as my old 86 Ranger when it clogged up.

Have you visually checked the throttle butterfly is opening fully?

It’s open about 1/4 inch at idle, max 1/2” as I rev past 2000

 

[Bird76Mojo]

Not much left to swap out at this point. Computer, coil...

Gonna have to pull the codes. There's a write-up on this site that tells you how to do it.

 

[dccarpenter]

Maybe use a plastic bag or tester on the radiator cap to check for head gasket issues? Might have an exhaust side blown gasket. I had similar issues, no sign of it in oil. New plugs and wires, ignition and sensors all good but just not a ton of power. Ended up being the head gasket...wasn't loosing coolant super fast so I didn't notice right away.