Question about 1985 Ford F 250

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Fresh rebuilt 460- bored 20 over only thing reused was crank, it was polished and we used the distributer. Motor fires, lots of fuel, crank timing correct, good spark it will not run ...HELP

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Remove all plugs and check compression to determine if valves are closing properly. pull rocker covers and check arm movement. did you install a high-lift cam?

Posted on Apr 26, 2010

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Posted on Jan 02, 2017

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Just rebuilt boat motor replaced crank pistons reeds and bored it 30 over decked the heads and after the break in process It will only run 55 at 5000rpm and before it ran 72 at 5800rpm whats wrong.


If you made no changes to the fuel injection computer to tell it that the displacement has changed from boring the cylinders 30 over, it will not know to add more fuel from the injectors. Engine displacement is programmed in at the factory.

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I replaced all my sensors on my 1999 chevy tahoe with a 350 engine I'm getting fire from wiring hardness to distribute cap not getting fire from distribute coil wire to coil wire I've replaced crank...


sounds like you're wasting lots of cash. Check engine codes? take it to a shop and pay by returning all the unneeded parts? call a cab?
Please tell me you can use a multimeter and read a manual.
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Feb 02, 2015 | Cars & Trucks

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I have a 2.8 v6 92 s10. The motor cranks but won't fire. I have replaced the o2 sensor, pcv valve, tps, iac valve, cap, rotor, plugs, wires, fuel pump filter and sending unit, rebuilt fuel pressure...


check for spark first,either with a spark test light or the old fashion method- screwdriver held close to metal,if no spark- distributer could be the culprit

Oct 23, 2014 | 1992 Chevrolet S-10

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Rebuilt engine, new radiator, new crank shafts, new transmission, new spark plugs, brand new battery... Wants to start sooooo bad, but it doesn't seem like it's getting enough fire??? What else should be...


Out of time, turn your distributer around a bit and see if it helps. Could be a number of different things tho, could be valves are out of time, (cam out of sync with crankshaft)....

Dec 04, 2013 | Cars & Trucks

1 Answer

1988 F150. 5.0 Have fire and Gas but will not crank. Not even with ether . have fire at distributer and fire at spark plug. checked timing its good. Replaced coil and electric module on distributer....


I would check the compression first. Without compression it won't fire. I should be at around 160psi per cylinder. If any are below or varies 10psi per cylinder, then the engine needs to be rebuilt.

Mar 18, 2011 | 1988 Ford F 150

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1979 ford 460 v8 engine on a ford one ton truck frame under a motor home. would not start. installed a rebuilt carburetor and a new fuel pump. got it to run, took it for a test run of 20 miles. at 10 miles...


Pull a couple of the sp. plugs out and see if there is fuel on them. If not pull the o2 sensor out of the exhaust and see if it starts. It will run rough but should start and run. If it does start you have a plugged catalytic converter or muffler and it is putting back pressure on the engine and not allowing the fuel into the cylinders.

Jun 22, 2017 | 1979 Ford F 350

1 Answer

Ilp have an 87 F350 with a 460 and a manual trany


Did you drain the old fuel out of the tanks? Old fuel will not fire most times it goes bad and mosture accumulates. Next question for you are you getting and spark?

Jul 07, 2010 | 1987 Ford F 350

1 Answer

Engine turns over, fires, but won't run 1990 f250 w/460 sunds like it is out of fuel. changed plugs, wires, distributer, fuel filter. put fuel in both tanks.


I'm assuming its carburated???? is so, check that the choke is engaging and if possible, try cleaning the idle circuit in the carburator....these things are tricky.....also look for old cracked vaccum lines as the older trucks (mine included) are VERY sensitive to vaccum leaks.

hope this helps, good luck

Jul 08, 2009 | 1990 Ford F250

1 Answer

1998 s-10 2.2l intermittent hard start


because you said it sounds like timing problems i may have an idea. i dont remeber if these have a distributer? but its common for the distributer on the newer GM trucks and i dont know why but its like the spark jumps around inside causing incorrect firing order when trying to start and just gets worse and worse. remove and inspect for build on on rotor and tabs on distributer.

and get back to me with problem
plz rate
Michael
ASE certified

Jan 30, 2009 | 1998 Chevrolet S-10 Pickup

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