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hard start after hot soak

5939 Views 14 Replies 8 Participants Last post by  greenfuel
I'm new to the site so I apologize if I'm asking a question that has already been answered.
I have a 1988 F-250 with the 7.3 IDI. It starts ok in the morning or any time it's cold but after it has been driven and then shut off for 30 minutes or so, it almost runs the batteries down getting started. Once it starts, it doesn't sputter or anything. It runs good. Anytime the "wait to start" light doesn't come on I know it's going to be hard to start. If the light does come on, it will start ok. When I say ok, it doesn't just jump to life but it starts after a few seconds of turning over. If I try to start immediately after shutting it off it starts right up quickly. So far I've had the lift pump, injector pump, glow plugs, control module, relay, injectors, return lines and caps and starter replaced. Should my "wait to start" light always come on when starting or just until it warms up enough? Could this be a lack of compression?
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The wait to start light comes on every time, 30 minutes after running you don't need the gp's to restart. Before you go berserk I'd try ANOTHER starter. I just had similar symptoms and it was the starter.
That's a good way to ruin your pump.
Spraying a hot IP with water will "warp" the pump and it will definitely be bad.
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