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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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Old 03-10-2010, 07:35 PM
89straight6 89straight6 is offline
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89 300 straight six issues!!!!!

ok well here we go... i have a 1989 f150 straight six. from day one of owning this truck ive had ignition issues. it has new plugs an wires, distributor w/cap an rotor, new fuel module (on the side of the distributor), a new coil, new high pressure fuel pump, fuel pump relay, and the mechanic before me had replaces all the electical connectors that go to the injectors. After i fixed the leaking injectors and bypassed the fuel water seperator, the truck ran great. i put exactly 191miles on the truck and never had a problem. I was certain that i just rain out of gas, cuz of the 11 mpg that it averaged out to be, but i put gas in it and not i cannot get it started again...... I am at a lose here! i can NOT figure this thing out. if you have any ideas where i should begin to look, please let me know..... Thanks!
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Old 03-10-2010, 08:47 PM
danr1 danr1 is offline
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When you tested for spark what was the result of the test?

"Key on" power to coil and injectors etc etc?

When you tested for fuel volume and fuel pressure what was the results of the tests?

If fuel delivery system up to spec, spark plugs wet with fuel? or bone dry? Do injectors actually cycle, in other words power to them but can you hear/feel them clicking computer is giving command to pulse?

Check to verify timing was on as in #1 cylinder up on to tdc on compression stroke, rotor point to number one on the cap?

What you replaced in the past gives us nothing to go on for a currant "no start" condition, any test results you just preformed would provide info for us to give "next step" suggestions based on the outcome of those simple tests.
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Old 03-11-2010, 12:17 AM
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what he said...

also if you put some gas on your air filter bolt the box shut and it fires up then dies again that will narrow it down a bit too

process of elimination man
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Old 03-11-2010, 12:55 PM
89straight6 89straight6 is offline
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got to the truck this morning and it fired right up! drove it a little over a mile and it did the same thing. acted like it ran out of gas and just died......
PS yes there is gas in it
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Old 03-11-2010, 01:07 PM
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Quote:
Originally Posted by 89straight6 View Post
new fuel module (on the side of the distributor)
Huh?

Quote:
Originally Posted by 89straight6 View Post
bypassed the fuel water seperator
The what?

Quote:
Originally Posted by 89straight6 View Post
got to the truck this morning and it fired right up! drove it a little over a mile and it did the same thing. acted like it ran out of gas and just died......
PS yes there is gas in it
Here's what I would do:

- Pull the codes. They may lead to a sensor that's out of whack and giving bad data.
- Check the timing.
- Check the fuel pressure. This will eliminate the fuel system as the source of the problem.

You say that this truck has had ignition issues for a long time and you give a long list of ignition system components that you've replaced. But you never mentioned what the problem was or if it's similar to what's going on now.

Also, if you replaced the ignition module, did you replace a gray one with a black one or vice versa? The color needs to match.

BTW I have an '89 F-150 with a straight six.
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Old 03-11-2010, 01:07 PM
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