Need some help identifing a hose.

[Kentpolo]

Hey everyone been a follower of this page for a while owned a 1988 ranger with the 2.9 straight drive 4x4. Anyways runs sluggish no power, starting to move into replacing stuff in the Moyer I have done the pugs, plug cables, distributor cap and clip, map sensor and pcv valvue. I am posting oa photo of a hose that I need some help identifing. Me and the guys can not figure it out. Comes from the air box to the manifold. Anyways gets like 8 mpg also. Any tips tricks and advice would be awesome just let me know. Thanks I’m afvance!!

 

[Kentpolo]

Just notecard photos did not post will update soon but any advice on mean time would be awesome

 

[Kentpolo]

Here are the photos

 

[Paulos]

It looks like the heat riser or pre heater hose. It pulls warm air off the passenger side exhaust manifold to help with cold starts/warm up.

 

[adsm08]

Yeah, that's the pre-heater pipe. It's not your problem.

I'd start with checking timing, fuel pressure, and if neither of those shows a problem, compression.

 

[Kentpolo]

Well thanks for steering me in a direction because definitely have some issues the timing seems to be off. My cheap light was showing +1 instead of 10 as the trucks says it should be. Also fuel pressure is showing 20 psi instead of the 30-40. So defiantly have some issues. I’m going to do some more investigating. But that is the latest update. Thanks again for the help!!!

 

[adsm08]

I'd start with fixing the timing, I like running it around 12* rather than 10. Then I'd change the fuel filter and check the pressure regulator for a ruptured diaphragm, and if fuel pressure doesn't come up I'd look at the high-pressure pump.