Question about 1984 Ford F 250
Was wondering if anyone had this similar problem and knows how to fix it. I have a 1988 ford f 250 with a 5.8L EFI engine. It had started fine the other day I drove it around for a few hours came home parked it. Decided to start it up today and it wont start. I checked for spark and it has when I depress the fuel pressure relief valve while cranking it from the selonid under the hood fuel comes out but still when turning it over it chugs like it wants to start but yet nothing. I've spent hours all over the engine and fuel system and still cant figure it out.
Since you are getting spark and fuel we know you are good there. Check the timing on the engine. Turn the engine from the front of the crankshaft with a socket and a large breaker bar until you reach top dead center of the intake stroke. Then remove the distributor cap and check to make sure the rotor is pointing to the # 1 cylinder. It almost sounds from your description of the sound the engine is making that the timing chain has jumped a few teeth on the gear. These factory gears have a nylon coating on the teeth and over time the nylon chips off the gear. When to much of this plastic gets chipped off the teeth it results in chain slack on the push side of the gear. When you shut the engine off it can jump a few teeth at the very last second before the engine stops rotating the crank and cause it to jump teeth. The engine probably has high mileage and might need the timing gears and chain replaced now. If you perform the visual check with the distributor I think you will find the chain has jumped a few teeth. If you need more help come back to this site and one of us will be glad to help. Good luck. Let me know what you discover.
Posted on Mar 05, 2009
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