F250 Diesel rough idle. Need DIY advice please!

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Wes Schott - 31 Aug 2004 04:37 GMT

My 1989 F250 Diesel is idling very roughly and has died while stopped
several times. I've always been able to restart it, but it is happening more
frequently. (Just had a new transmission put in, too).

Which should I replace myself first to try to fix the problem?

1. Fuel filter
2. Glow plugs
3. Replace or clean fuel injectors
4. Other?

Thanks,

Wes

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J Harris - 31 Aug 2004 04:39 GMT

How old is the fuel filter? If you're asking that question it might
mean that the filter hasn't been changed in awhile. It is absolutely
essential to keep the fuel filters clean on these diesels.

Glow plugs have no bearing on rough idle.

Fuel injectors MIGHT be bad, but unless you're way over 200K miles I
doubt it.

JH

> My 1989 F250 Diesel is idling very roughly and has died while stopped
> several times. I've always been able to restart it, but it is happening more
[quoted text clipped - 10 lines]
>
> Wes

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Wes Schott - 31 Aug 2004 04:50 GMT

Wow, that was fast!

Actually, I don't know how long it has been as I inherited it from someone.
It has about 178K miles on it mostly pulling a large 5th wheel RV trailer.

I will change the filter tommorrow.

I have been told the fuel filter is on the left side as you face the engine
well, and not inline underneath the truck. True?

Thanks.

> How old is the fuel filter? If you're asking that question it might
> mean that the filter hasn't been changed in awhile. It is absolutely
[quoted text clipped - 21 lines]
> >
> > Wes

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JSMMV - 31 Aug 2004 05:12 GMT

>I have been told the fuel filter is on the left side as you face the engine
>well, and not inline underneath the truck. True?

True i,it looks like an oil filter some have a drain on the bottom.

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