Hard Starting
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Freshman User
Joined: Aug 2003
Posts: 46
Likes: 0
Hard Starting
93 F150, Straight 6 is hard starting. I turn the key, wait for the fuel pump to stop, but still I have to turn it over, wait, turn it over about 5 or 6 times before it will finally start. I did a whole tuneup, plugs, cap, rotor, wires, everything I could think of. Once it's running it's just fine but always very hard to start summer or winter. Any ideas?
Elder User
Joined: Apr 2001
Posts: 772
Likes: 0
From: Glen Burnie Maryland
Check your fuel pressure. With the 300 it should be right around 58-61. It will drop a couple of #'s once started. If it's below that, put a pressure regulator on it.
Also check your pressure regulator for a bad diagphram. Pull off the vacuum line and check for fuel in the line. FUEL = BAD UNIT.
Also check your pressure regulator for a bad diagphram. Pull off the vacuum line and check for fuel in the line. FUEL = BAD UNIT.
Senior User
Joined: Nov 2003
Posts: 320
Likes: 3
From: Northwest BC. Canada
A bad idle air control valve may be the culprit as well. The IAC controls the idle speed and is noticable on start when it keeps the idle elevated on a cold start for 30 sec or so before it drops back to normal. This is alot like giving the vehicle a shot of gas before it is started. If it is not functioning, it may be hard to start hot or cold.
