engine replacement trouble
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New User
Joined: Mar 2004
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From: TX
engine replacement trouble
I bought an 88 ford f150 with a cracked cylinder[300/6]. I bought an engine and made the swap, which i have to comment is the most troublesome engine job I've ever encountered. After all the trouble of the swap my "new" engine isn't operating right-in fact it doesn't crank. I found tdc and put my plugs and distributor aligned with 153624. Is'nt this correct? It only seems to fire on about 4 cylinders and does't fire up, and if that isn't enough trouble I burnt up my starter and when I place the post on the battery there is a dead short with the ignition off. What is all the troubles with this stuff. The engine had 53,000 miles and it was in a totaled 3/4 ton flatbed. It sat for about 2 years, but the engine in my car[beretta 2.8 liter] had 100,000 miles and sat longer than to years and since I've put over 100,000 more on it! Someone give me insight. I usually avoid Fords because our luck usually does'nt collide. However I owned a 94 straight six a while back and thats why I was turned on to this truck. Maybe the valves aren't seating? Does someone have all the anwers? By the way I checked the wires routed to the starter and no shorts there. Help me
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Senior User
Joined: Jul 2003
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From: Meggett SC
To make sure you have everything set up correctly, rotate the engine so that the #1 cyl is at 10 deg before TDC. Make sure that the rotor is pointing toward the #1 plug wire. Remove the #1 sparkplug attach it to the #1 plug wire and ground the plug to the block. Loosen the distributer and disconnect the spout connector plug, turn on the ignition (don't crank the engine)
slowly rotate the distrubuter and you should be able to see the plug fire. If you dont see any fire then you have something wrong. If it does fire turn the distributer until the plug just fires and lock it down. Check the firing order 153624 clockwise
then try to start it. If it dosent start look for a fuel problem.
If it still will not start a compression test would be my next step.
Good Luck
slowly rotate the distrubuter and you should be able to see the plug fire. If you dont see any fire then you have something wrong. If it does fire turn the distributer until the plug just fires and lock it down. Check the firing order 153624 clockwise
then try to start it. If it dosent start look for a fuel problem.
If it still will not start a compression test would be my next step.
Good Luck
Elder User
Joined: Sep 2003
Posts: 908
Likes: 4
Cheapo rebuilt starters can short dead out. I've had it happen. When the starter shorted out, it fused the starter relay together. They both need replacing.
Obviously this is an EFI engine, but you didn't say if you used the '88 stuff or the '94 stuff. There is a LOT of room here for mismatches, especially with the computer. IMO, you have to use ALL the '88 stuff along with the existing '88 peripherals, or change it all over to the '94, using the computer and everything else from the '94 pickup.
It is possible that valves could be stuck open after sitting for 2 years, depending on the environment it sat in. Easy to see - pull the valve cover and crank the engine (after replacing the starter, of course.)
Obviously this is an EFI engine, but you didn't say if you used the '88 stuff or the '94 stuff. There is a LOT of room here for mismatches, especially with the computer. IMO, you have to use ALL the '88 stuff along with the existing '88 peripherals, or change it all over to the '94, using the computer and everything else from the '94 pickup.
It is possible that valves could be stuck open after sitting for 2 years, depending on the environment it sat in. Easy to see - pull the valve cover and crank the engine (after replacing the starter, of course.)
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New User
Joined: Mar 2004
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From: TX
the replacement engine was from a 87 3/4 ton~Someone told me that maybe my injectors are leaking but man to get to the fuel rail is gonna be scary. Thanks about the starter info though. I'm thinking about putting it in fourth and havin someone drag me till runs
Maybe it will just give up and roll. I dont wanna replace the starter till I know I can crank it but whateva. Why would an injector thats been out of use begin to stick/leak?
Maybe it will just give up and roll. I dont wanna replace the starter till I know I can crank it but whateva. Why would an injector thats been out of use begin to stick/leak?
Last edited by getrag5speed; Mar 18, 2004 at 02:04 PM.
