WD-40, Starting? - Page 2 - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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post #11 of 16 Old 11-06-2007, 09:03 PM Thread Starter
 
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hahaha, sorry to keep adding, but another question i have is, when i replaced some of my glow plugs, the back 2, or 7,8 cylinder plugs had a gray covering on the tip, sort of like they were dipped in ash, but it was burnt on? what does this tell you more knowledgable guys? thanks!
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post #12 of 16 Old 11-06-2007, 09:05 PM
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Wow....one more use for that miracle liquid WD40...
think i'll start a new thread.
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post #13 of 16 Old 11-06-2007, 09:10 PM Thread Starter
 
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its is an 84 ford, the story is that it has a 7.3 idi swapped into it, but honesty i am not sure, everything on it is 6.9 idi, i have not cared enough to find out forsure, i might take the time on day, i had a good diesel mechanic look at it, and told him about the swap and he said it was a clean swap, so i have been trusting that is it indeed a 7.3, with 6.9 parts, such as glow plugs. The milage reads 124,000, so i bielve it has 324,000 with less than 100,000 on the new engine
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post #14 of 16 Old 11-06-2007, 09:12 PM
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Okay the reason I asked is that all has to factor into your starting. The older and more tired you engine is the harder it will start as it loses compression, but you should be good with only 100 k on the engine. If you replaced the gp's its more then likely the relay is bad.

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post #15 of 16 Old 11-06-2007, 09:14 PM Thread Starter
 
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What about something casuing good gp's to go bad? I rember stumbling across a problem like this, but i can't rember what caused it, or if it even happens in the idi's. Thanks for all the help guys!
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post #16 of 16 Old 11-06-2007, 09:20 PM
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Sure there is a lots of things that can cause fualty gp's. They usually burn out over time from excessive heat. Check the relay first its the easiest test and if its bad replace if its good then you can move to the next proboble cause for your starting problems.

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting


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