Injector replacement interval - TCCoA Forums
 
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post #1 of 11 (permalink) Old 05-06-2007, 10:43 PM Thread Starter
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Injector replacement interval

What is the recommended interval to change injectors on the 3.8?
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post #2 of 11 (permalink) Old 05-06-2007, 10:54 PM
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When they start giving you problems? I looked and could not find anything in the service manual. Maybe someone else might have an idea.
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post #3 of 11 (permalink) Old 05-06-2007, 11:06 PM
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there is no interval if you suspect a leaking of cloged injector then have them tested...but most of the time testing or cleaning costs just as much as replacing the stock injectors so you might as well replace them if you suspect a problem

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post #4 of 11 (permalink) Old 05-06-2007, 11:42 PM
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Yeah injectors don't have a service interval. They get replaced when they no longer function properly and the problem can't be remedied with a cleaning.

--Chris

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post #5 of 11 (permalink) Old 05-07-2007, 12:02 PM
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That was my impression. When they go, replace them. I would start with some (a lot) SeaFoam through the system (gas tank and intake) and see if that helps. Cheaper to buy $7 of SeaFoam than a $60 - $140 injector. Then you have to consider all the other things that may act like an injector going bad...

1) TPS
2) Wires and plugs
3) o2 sensors
4) IAC
5) poor gas
6) etc. etc...
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post #6 of 11 (permalink) Old 05-07-2007, 01:53 PM
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Here are some injectors for 3.8l's:

http://cgi.ebay.com/ebaymotors/FUEL-...spagenameZWD1V
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post #7 of 11 (permalink) Old 05-07-2007, 03:06 PM
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www.fiveomotorsport.com has both new and refurbished injiectors, and you don't have to win an auction to get them.

The Parts Bin Special is DEAD! It is being parted out.
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post #8 of 11 (permalink) Old 05-07-2007, 03:08 PM
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Cool. Na, these are outright buys, no auction. I just saw them when I was looking for some stuff for my 94...
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post #9 of 11 (permalink) Old 05-07-2007, 07:57 PM Thread Starter
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Before I buy them I'm going to break the scanner out and run the diagnostics on the car.

I know my 6.5TD recommends replacement of injectors at 100,000 miles and I couldn't find anything in Mitchell on the 3.8 replacement interval.

With 186000+ I think it is getting time to replace them.
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post #10 of 11 (permalink) Old 05-07-2007, 11:40 PM
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At 185k mine are still working perfectly. Don't waste your money if you don't need to buy them. An injector balance test or flow test will tell you whether or not to replace them.

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post #11 of 11 (permalink) Old 05-08-2007, 09:27 AM
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Quote:
Originally Posted by packratt View Post
Before I buy them I'm going to break the scanner out and run the diagnostics on the car.

I know my 6.5TD recommends replacement of injectors at 100,000 miles and I couldn't find anything in Mitchell on the 3.8 replacement interval.

With 186000+ I think it is getting time to replace them.
NS! I would go for some o2's before the injectors! Have you replaced the o2's since 100k packratt? It sure solved a lot of my problems; but then again, its still a 3.8l.
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