87 f150 problems continue
#1
87 f150 problems continue
Alright.....Here is the list of repairs so far:
main bearings
rod bearings
plugs and wires
fuel pump
oil pump
various gaskets
Now I cant keep the thing started. Its really shaky when I first start it up and then it keeps idleing out after that. Every time I come to a stop it kills. It seems to have gotten much worse since I replaced the fuel pump. Im assuming its something to do with the choke. Does that sound right??
main bearings
rod bearings
plugs and wires
fuel pump
oil pump
various gaskets
Now I cant keep the thing started. Its really shaky when I first start it up and then it keeps idleing out after that. Every time I come to a stop it kills. It seems to have gotten much worse since I replaced the fuel pump. Im assuming its something to do with the choke. Does that sound right??
#3
The fuel filter is directly below the driver's side floorpan on the inside of the framerail. It should be silver with a black connector on both ends. If you do not have this filter(it will be directly in front of the frame mounted fuel pump), look towards the back for a black cartridge with a screw off bottom. There may be a filter in it. If you have both filters, replace the silver one and remove the screw in cartidge filter. Also, check the firing order and the plugs and wires. The firing order will be stamped in the intake manifold just behind the distributor. Should be 1-5-4-2-6-3-7-8. The wires will go counter-clockwise on the cap. Also check for vacuum leaks. A major vacuum leak will cause your concerns. If all this checks out, and still runs like crap, repost and you can get some more info possibly on the EEC system.
Robbie
Robbie
#4
I will get the filter taken care of. There really isnt anything wrong with it...I just figured I would change it for the hell of it. The plugs are fine. The fuel pump was bad, and the problem has started to get worse since I changed it. Plugs and vacuum lines are fine though (first thing I checked). Its hard to believe that I have has all these problems because the past owner didnt change a $16 pump. Oh well.
#5
Just a thought, your truck also has a low pressure supply pump inside the gas tank. If you have dual tanks, one in each. It supplies fuel from the tank to the frame mounted pump. The frame pump cannot syphen fuel from the tanks on its own. To check the tank pumps, pull the rear line off the frame pump and have someone turn the key to on, the in tank pump should pump fuel for approx. two seconds.
Robbie
Robbie
#6
I would hook up a fuel pressure gauge to the service port on the fuel rails. Eliminate the fuel system. I think your barking down the wrong street. If you can drive your truck fine and it only dies when you coast I doubt its the fuel system.
I would check firing order for sure as someone else stated. Also check IAB valve, Check for vacume leaks. You had the intake off. Its easy to forget to put something back together or plug something back in. Check the PCV valve on the back of the intake.
Dave
I would check firing order for sure as someone else stated. Also check IAB valve, Check for vacume leaks. You had the intake off. Its easy to forget to put something back together or plug something back in. Check the PCV valve on the back of the intake.
Dave
#7
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Actually, I own an 87 f150. It came with a 351w 5.4 4bbl holley 4180c carburetor stock from the factory. From what I understand, 87 was a transitional year where you could get them with EFI or carburetor. Find a chiltons manual for that year, it has both in it, and is very helpfull. (I have one)
It also has a mechanical fuel pump on the front right side of the engine.
I'm not sure if the carbureted version has the body mounted fuel filters, but I'm gonna check cause maybe that's whats wrong with mine!
My truck cuts out and boggs down when you give it very much gas pedal, and sometimes when you let off afterwards, it backfires. Sometime I can barely keep it at 55mph. I replaced the power valve in the carb thinking it was blown out, but no improvement.
My truck is also what they call a heavy half, which means it came stock with a lift kit and overloads on the leaf springs, upgraded shocks etc etc.
It also came with crappy one piece 4 wheel drive hubs that cost $165.00 each!
Clint (aka UH60L)
It also has a mechanical fuel pump on the front right side of the engine.
I'm not sure if the carbureted version has the body mounted fuel filters, but I'm gonna check cause maybe that's whats wrong with mine!
My truck cuts out and boggs down when you give it very much gas pedal, and sometimes when you let off afterwards, it backfires. Sometime I can barely keep it at 55mph. I replaced the power valve in the carb thinking it was blown out, but no improvement.
My truck is also what they call a heavy half, which means it came stock with a lift kit and overloads on the leaf springs, upgraded shocks etc etc.
It also came with crappy one piece 4 wheel drive hubs that cost $165.00 each!
Clint (aka UH60L)