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Injector info,again !!

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Old Aug 1, 2008 | 12:40 AM
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bigdog55
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Injector info,again !!

Is there something different about the #8 injector. I am having to have that one replaced now.. Just had 1-3-5 replaced on vacation and then a couple of days later the noise started again. I had them all tested and they found that #8 was bad. I realize that it's harder to get to,but the cost of the injector was more than the others.. Does it do something different or something???
 
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Old Aug 1, 2008 | 11:35 PM
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Originally Posted by bigdog55
Is there something different about the #8 injector. I am having to have that one replaced now.. Just had 1-3-5 replaced on vacation and then a couple of days later the noise started again. I had them all tested and they found that #8 was bad. I realize that it's harder to get to,but the cost of the injector was more than the others.. Does it do something different or something???
The number 8 injector is a long lead injector. The LL injector has a longer primary shot of fuel to help with the under fueling condition caused by the dead end fuel rail. Also, Ford designed the #6 and #8 cylinder to fire in that order, #6, then #8. They are both on the drivers side, with #8 being all the way on the back. The fuel system feeds from the front of the block, so when it fires, the #8 injector is a little short on fuel.

The LL injector fires a larger pilot injection to make up for the fuel deficiency.

Stewart
 
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Old Aug 2, 2008 | 08:41 PM
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Hummmm.. Thanks...Always some way for them to make more money.It was interesting to see the differences in the bill for the work time.. The 1-3-5 injectors,ISP and two harnesses were billed out at 12 hours and they took LESS than five hours.. This time the #8 and harness and valve cover gasket cost me $979 total and $440 of that was for the injector alone..I checked with two different dealers and they came up with the injector price within $25.Oh and the hourly rate at this place was more than the dealer..But still cheaper..
 
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