Hmmmmmmmmmmmmmmmm!!!!!!!!!!!!!!!!
Put the head Back on and ran the compression on the Engine and here are the result's
1-135 Pound
2-135 Pound
3-135 Pound
4- 35 Pound
What do Y'all Think???
I have not cranked the engine, Wanted some advise before I did.
Do you think the engine will last a while or is it Doomed?
Tnx

 

Got a leak somewhere. Could be a valve leaking, did you have them checked? Otherwise could be the head gasket is leaking, or worse broken rings, block. I would pull it off and take a closer look at that # 4 hole. ( Are there any valve adjustments on the that engine? It could be that it's so far off that the valve is not closing or stuck open.)
Dave

 

well you mentioned earlier that it doesn't burn any oil. And for a cylinder to have that low of compression I would think those rings would be pretty bad. What does the #4 combustion chamber look like? Was it clean or heavily deposited?. I agree too with there being a leak , or the valves are off. You could check your valve clearances at the rocker arm, also make sure they seal completely. If you are saying you want more power you might want to do a valve job anyway. polish the whole chamber until its smooth and clean.

 

Look's like the Fuel Pump is not working. It will not put any fuel to the rack!!
Is there any after market fuel pump that will work? Or does it have to be the orginal.
If it is I am going to Have to take out a Loan!
Tnx

 

Not sure about the fuel pump, but make sure the connections are ok and if you do have to replace it most people here say it is easer to pull the six bolts on the bed and lift it up to get to it. Did you find the compression problem?
Dave

 

No, Not Yet! I went back to the Machine Shop that did the Head and he told me that it could be a Ring trying to freeze up on me. He asked me had it been sitting for a Long time I told him Yes! He said to Put some Pentrating oil in the piston hole and let it sit for a while! So I did that and I am going to let it sit for 3-4 Day's. This Fuel Pump that is on this Truck (1987) is on the Frame. It did not Take 5 Min to get it off. It is Pretty good size for a Pump. I have a Couple of electric Fuel pump's Here on the Farm and I thought That I would try One of them. Went By Autozone and That pump that goes on this Truck is $95.00 I truely do not think that It is worth that kind of Money.

 

Many of the mid to late 80's Rangers have 2 pumps. A high pressure pump on the frame rail, and a low pressure pump/sending unit in the tank. That is why Dave257 suggested pulling the bed for ease of access.

I was thinking something while reading the updates: Is it possible that the deck of the block has warped from the blown headgasket? Did the machine shop check the block for a level deck?

Also, for your compression test there is a trick that I have read about that involves putting a tablespoon of motor oil down the plug hole to check for a difference in compression during the test. Honestly, I don't remember exactly what this test was supposed to tell you since I have never had to do it myself. Maybe someone else knows more about it than I do. One of the other boards I belong to is always talking about compression, and leak-down tests. I think the leak-down test can tell you where the leak is. IE - I seem to recall someone talking about listening for escaping air. I think it was.... air coming out of the valvecover is bad rings, and air coming out of either the intake or exhaust is a bent/non-sealed valve. I hope some of this info helps, and sorry I am not more of an expert in this area.

 

We use to do the oil trick when I was a Kid. It will seal the rings and if the compression is ok then it is bad rings. It will help some, but if its only a small inprovement it is a sign of a valve/combustion chamber leak. This is a very bad leak and I would think it would be pretty easy to spot.
Dave