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Old 01-12-2014
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Fuel pump issue?

Not sure exactly where to post this question as it relates of an '84 Ranger with a 2.8l V6. Similar enough to the 2.9 so thought I would throw this question to the the forum most familiar with these engines.

My son's Ranger has sat for about 6 months and we are just getting it on the road for him now that it has hit the magic 30 year old mark and can be permanently registered as a 'classic' vehicle. After we parked it for the rest of last year, we have gone through and done some needed maintenance on items that though functioning, were starting to show signs of wear or needed refreshing. New starter, new starter relay (ran into some problems here that are documented on the General Technical and Electrical sub forum, now solved), fresh belts/hoses/vacuum lines, cleaned up electrical connectors and straightened out the wiring looms, fresh plugs/wires/distributor components, and a cleaned and rebuilt carburetor. Each component refreshed followed up with confirmation that the truck ran when completed whenever needed.

Now that I've listed the things we have done I will pose my question:
Just before parking it for the latter part of the summer/fall, my son put in a new (mechanical) fuel pump. Worked fine, he drove it for almost a month with no issues. Now that it has passed the magic age of 30, he is ready to re-license it. It turns over great but we are not getting any fuel to the carb from the fuel pump. New filter installed on front of carb during rebuild and works properly. Trickle gas into carb from bottle and truck runs fine. Removed line from fuel pump and ran a hose into a bottle to measure fuel flow and nothing comes from the pump. Removed fuel line from output side of pump and there is not any pressure coming from the pump.

Is it possible the diaphragm inside the pump has dried up and is no longer forming a sufficient vacuum to pull gas from the tank?
Any other thoughts or words of advise are appreciated. He REALLY wants to get this thing on the road again and I'm anxious to have my 'spare' rig back home. ---rick
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Old 01-12-2014
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Shy of running a rubber line to the inlet side of the pump from a 5 gallon can to rule out tank issues Id say you are looking at replacing the pump
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Old 01-12-2014
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Mechanical fuel pump issue

Correct, RonD. It is a mechanical fuel pump, mounted on the left (driver's) side of the block just below the power steering pump. It is actuated by a rod, similar to a lifter rod, which follows a camshaft concentric.

I pulled the pump earlier today and tried to do some bench testing. The actuator rod presses against a curved lever just inside the opening of the pump. Using a brass drift, I pressed the lever inside of the pump and could only move it about 1/16", but I do hear the diaphragm moving. I have a few errands to run this afternoon so I will pick up some gas while I am out to see if the pump is forming any vacuum capable of pulling gas from the gas can.

Does anyone know how far the actuator lever inside the pump is supposed to move? My recollection from working on my old racecars were that the actuator lever inside of the pump moved further than this one is. ---rick
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Old 01-12-2014
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in-tank pump

Is it possible an '84 2.8L V6 has an in-tank lift pump,to assist the mechanical pump? Never heard of one but the mid-80s were a time of transitional mechanical engineering. Can't see anything like that online or in my Chilton's manual.
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Old 01-12-2014
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thread consolidation

Hi everyone. To keep this thread easier to track I am consolidating comments over at the General Technical and Electrical sub forum (https://www.ranger-forums.com/genera...-issue-140812/). Thanks for everyone's help. ---rick
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Old 01-13-2014
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2002 rqnger 3.0 lifter replace

I know this is probably the wrong place to post this but after 30 mins of trying to navigate this site for some info I'm ready to go nuts!!!! All I want to know is ....Do I have to remove the head to replace the #1 ex lifter?....(.2002 Ford Ranger 3.0).Looks like it might come up thru the head but I just can't get a good enough grip on it.....thanx for any help.
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Old 01-13-2014
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Quote:
Originally Posted by jimmer 426 View Post
I know this is probably the wrong place to post this but after 30 mins of trying to navigate this site for some info I'm ready to go nuts!!!! All I want to know is ....Do I have to remove the head to replace the #1 ex lifter?....(.2002 Ford Ranger 3.0).Looks like it might come up thru the head but I just can't get a good enough grip on it.....thanx for any help.
You can look at this thread:
https://www.ranger-forums.com/2-9l-3...lifter-117366/

And no you do not remove the head to change a lifter, but you do need to remove the upper and lower intake manifolds.

And just as a heads up(pun intended), the 3.0l exhaust valve seats had issues in the 2001+ years, the seats would move so valve wouldn't close all the way, rocker arm would be loose in this scenario as well, so check the height of other closed exhaust valves and compare that with the "loose" one.

Last edited by RonD; 01-13-2014 at 05:02 PM.
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Old 01-13-2014
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Originally Posted by fishsqueezer View Post
Is it possible an '84 2.8L V6 has an in-tank lift pump,to assist the mechanical pump? Never heard of one but the mid-80s were a time of transitional mechanical engineering. Can't see anything like that online or in my Chilton's manual.
'86 was the first year of the in tank electric pump
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