Posted: 11/10/2011 4:07:56 PM EDT
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I recently bought a 1985 Chevy K30 truck with a 350. When the engine is cold, it starts and runs fine as soon as you hit the key. However, after the engine is warm, it has trouble starting.
For a while, the engine acted like it barely wanted to turn over. I've replaced the battery and the starter. Now it seems to crank fine, however, sometimes, it will crank for 15-20 seconds before starting (when warm). Sometimes it will fire right away when warm, sometimes it just wants to crank....and crank. Any ideas what I should be looking to replace? |
| I dont know anything about that specific setup, but if the exhaust runs near the starter, it can heat up the solenoid and prevent it from working. Relocating the solenoid using a generic Ford solenoid, away from the starter will solve the hot start problem. May not be your issue but I figured I'd throw it out there. |
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Quoted:
I dont know anything about that specific setup, but if the exhaust runs near the starter, it can heat up the solenoid and prevent it from working. Relocating the solenoid using a generic Ford solenoid, away from the starter will solve the hot start problem. May not be your issue but I figured I'd throw it out there. It is a pretty common problem with the chevys. If I remember right there is a common kit that includes heavy duty wiring and the like to help the problem. We had a tow truck with a 454 that did it. Once he started towing in the morning he pretty much had to leave the wrecker on the rest of the day |
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The old Quadrajet carburetors have a tendency to leak fuel out of the drill plugs underneath the carb base plate. Generally that causes a couple of things to happen. If it sits a while, the fuel leaks out of the float bowl, creating a longer crank time as the fuel pump is filling the bowl back up. Also, depending how quickly the fuel leaks out, it can create a flooded condition, requiring a longer crank time.
Next time it does it, hold your gas pedal to the floor, don't pump it, just hold it down. If it starts that way, it's time to go through the carburetor. JB weld or a fuel resistant epoxy of some type over the leaking plugs in the bottom of the carb is acceptable. Good luck with it. |