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Aug 20, 2019 | 12:55 PM

Dirtboy1963

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94 idi

Gotta miss that I can’t seem to get rid of. New injectors in along with glow plugs. Drained the tank got fresh fuel and filter. Any ideas? Thanks

Aug 20, 2019 | 02:22 PM

CathedralCub

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The folks who know about this kind of thing don't usually frequent the "New Member Introductions" forum. It looks like you've started a thread in "Pre-Power Stroke Diesel (7.3L IDI & 6.9L)". I'll go check it out after this.

Welcome aboard!

Aug 20, 2019 | 06:04 PM

Dirtboy1963

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Thanks for your help what about cavitation is that a possibility?

Aug 20, 2019 | 06:22 PM

CathedralCub

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Maybe but I doubt it. You might want to ask that over in the other thread and see what some experts say.

Aug 20, 2019 | 08:55 PM

donjamer

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From: MA

Moved to appropriate forum

Aug 21, 2019 | 01:29 PM

solanum

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From: NJ

Can you feel the miss, or is it just a sound?

A few quick tests you can do:
Measure exhaust temps at each runner with an infrared thermometer, and see if there's a cylinder that shows a markedly different temperature than the others.
Loosen injector nuts one at a time while engine is running. RPM should drop each time. If it doesn't, you have a problem with the fuel system for that cylinder.

If you have a miss and it isn't fuel related, do a compression or leakdown test to figure out which side it's on. There are other tests you can do, but there's not much benefit because the head and gasket are coming off anyway.

Aug 21, 2019 | 01:58 PM

Olds64

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From: Edmond, OK

You mentioned that you installed injectors. Were they new? Re manufactured injectors from the parts store have questionable quality. The best injectors to buy are from these suppliers:

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Aug 21, 2019 | 06:35 PM

Dirtboy1963

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I can feel it especially when you just fire it up and can also feel it a little when I drive

Aug 21, 2019 | 07:03 PM

#10

lonewolf_

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apparently they changed their name from L&J to diesel Logic... quite a few complaints on them under both names....

https://www.bbb.org/us/fl/jacksonvil...752/complaints

Not saying you got a bad set as I have no way to test them from here...

EDIT: looking at old history you find this...... https://www.glassdoor.com/Reviews/L-...3,35_IM416.htm

Aug 22, 2019 | 04:20 AM

#11

tjc transport

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i agree.
i will put money on a bad injector.

Aug 22, 2019 | 04:32 AM

#12

Dirtboy1963

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Thanks again guys I’ll have to test them out and see what happens. Keep you posted

Aug 22, 2019 | 07:10 AM

#13

Olds64

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From: Edmond, OK

Good luck getting them tested. I took a set of injectors to a local diesel shop that said he would pop-test them. After he had them for a week I returned and he just wanted to sell me new injectors. Thankfully, he didn't charge me anything. I'm convinced he didn't do anything to my injectors. I brought them to him clean so he didn't even have to degrase them.

FWIW, I bought a set of new parts store injectors and they've done a fine job. It was about $300 for a set with a 3 year warranty.

Aug 22, 2019 | 12:02 PM

#14

Dirtboy1963

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So it looks like the reman injectors are the problem that seems to be the where most of my ford brothers are leaning.myself included. It’s running worse with the remans in it.

Aug 22, 2019 | 01:26 PM

#15

Olds64

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From: Edmond, OK

You have 16 injectors now, right? You can always fabricate your own pop-tester with a bottle jack. Hopefully you could salvage enough internal parts to make a good set of injectors.