#7 Injector Bad? or intake valve problem
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Senior User
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From: San Diego
#7 Injector Bad? or intake valve problem
Started engine after about 6-7 weeks of not running. Started right up and sounded good. Then I noticed a wet spot and a leak dripping on the ground off of the rear of the right exhaust manifold. The leak is weeping out between the head and the exhaust manifild at the #7 port.
The liquid felt like diesel fuel and felt slippery like diesel fuel.
Only three things changed from last engine start to this start
1. Changed the oil
2. Replaced block heater.
3. Added fuel stabilizer. Tank of fuel has sat for 8 months.
This morning i started the truck wth the injector vc connector for #5 & 7 disconnected. The weeping fuel stopped. After 10 minutes I stopped the engine, reconnected the #5+7 injector harness VC connector and started the engine. It started right up and within 15 seconds the weeping liguid at the #7 port returned.
The liquid felt like diesel fuel and felt slippery like diesel fuel.
Only three things changed from last engine start to this start
1. Changed the oil
2. Replaced block heater.
3. Added fuel stabilizer. Tank of fuel has sat for 8 months.
This morning i started the truck wth the injector vc connector for #5 & 7 disconnected. The weeping fuel stopped. After 10 minutes I stopped the engine, reconnected the #5+7 injector harness VC connector and started the engine. It started right up and within 15 seconds the weeping liguid at the #7 port returned.
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
Did you say in one of your other threads that you had the number 7 injector out? When you put it back in did you replace the injector o-rings and the copper washer at the bottom? If not I would start there.
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From: San Diego
Did pull #7
I did say that. Pulled it out slick as whistle and showed the injector to a Ford mechanic and he gave it the 
Slipped it right back in without a hitch, glitch or 2nd thought. Didn't notice anything wrong or difficult. I know more now about injectors than I did then.
But the engine ran for about an hour total - maybe 3 starts and stops, when I started after changing the glow plugs and UVCs. No leaks then.
Slipped it right back in without a hitch, glitch or 2nd thought. Didn't notice anything wrong or difficult. I know more now about injectors than I did then.But the engine ran for about an hour total - maybe 3 starts and stops, when I started after changing the glow plugs and UVCs. No leaks then.
Last edited by TPM; Jan 12, 2009 at 04:27 PM. Reason: typos
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
When an injector is reinstalled it NEEDS new o-rings. BUT what you describe doesn't sound like the injector is at fault. It doesn't make any sense that unplugging the injector makes the fuel stop unless you have no compression. Its possible and you should run a compression test on that cylinder at this point.
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Senior User
Joined: Jan 2004
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From: San Diego
New or Rebuilt injectors
I ran the truck this afternoon - now it is blowing white smoke rather steadily.
If you didn't know that the leak was on the exhaust manifold, you'd never suspect a problem. it starts and drives just fine - didn't go far enough to really check for full power.
I have a discussion going with Jim at Rosewood about getting the DIY stage 1 repair kit. I'm thinking I might as well pull the VC check the #7 and at the minimum, use the DIY kit on the right bank then see if the problem is fixed.
I checked a lot of posts and you are always pitching in and helping alot. Especially on my posts. Thanks, Tim.
If you didn't know that the leak was on the exhaust manifold, you'd never suspect a problem. it starts and drives just fine - didn't go far enough to really check for full power.
I have a discussion going with Jim at Rosewood about getting the DIY stage 1 repair kit. I'm thinking I might as well pull the VC check the #7 and at the minimum, use the DIY kit on the right bank then see if the problem is fixed.
I checked a lot of posts and you are always pitching in and helping alot. Especially on my posts. Thanks, Tim.
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