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General Forums => The Mess Hall => Topic started by: chrisfranklin on January 31, 2009, 08:19:04 PM
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Installed the Bosch IIIs a few months back. And they have performed well. Almost from day one though its had a bit of a rough, lumpy idle until the engine has warmed up. Then it seems to smooth out and generally run better than before the install.
I am beginning to think that there may be a slight leak in one of the injectors -- perhaps an o-ring is causing a problem somewhere
I stuck with the o-rings that came with injectors and that's what I used for the install. So I might have gotten burned on that even though the rings looked like they were in fine shape when I put them in.
I went ahead and picked up some new o-rings and and am going to pull the injectors and reintall them with the new rings. Given the lumpy idle business -- nonexistant before the intstall and all else constant -- what would you guys do to attempt a fix? Pull the injectors? Replace the o-rings?
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That would be the easiest thing to do. New O-rings are $3. You might need to replace the caps as well. I'd at least take them out and inspect them.
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Jeffy,
Sorry to Hijack the thread but I have the same questions. I'm in the same
boat. I think I will replace the o-rings for three bucks, before I do my install,
to save me the aggravation down the road. How much are the caps and do
you have both part numbers (O-rings and Caps). Also, the best place to get
them. Dealer / NAPA / or ?....
Thanks,
John
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I have a set of Fel Pro Fuel Injection O-Ring Set Part Number: ES70599. Although I didn't bother replacing the O-rings on the Design III's since they looked good and not torn,tarnished or dry. I haven't had to replace the caps. Remember to check BOTH O-rings. There is one on each end.
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i have a similar problem.
i thought my injectors were faulty but after some twisting and tinkering the idle smooths out.
i think it had new caps and o rings, but i did it at -20 celcius so i probably tore one. i can see visible fuel leaking.
i guess dealer would be best bet?
im using the design III
i tried napa and they couldent match anything
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http://www.partsamerica.com. If you have a Kragen, Schuck's,Checkers or Murry's, you can do in store pickup. Prices online are many times cheaper then in-store as well.
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http://www.partsamerica.com. If you have a Kragen, Schuck's,Checkers or Murry's, you can do in store pickup. Prices online are many times cheaper then in-store as well.
And O'Reillys . Oreillys bought out CSK auto a while back
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I was thinking I had a bad o-ring or something else wrong with the Bosch 3 injectors to cause the rough idle. Maybe I do or don't have a bad o-ring, but I found something else that seemed to correct the idle business. Turns out I'd been driving around for a while with the coolant resevoir and to some extent the radiator partially empty. The coolant guage had broken a while back and my attention when it came to cooling was on getting that corrected.
Anyway I topped the resevoir and the radiator off and the idle seemed to return to normal. Then I recently went and had the Jeep smogged since it was somehow picked by CARB as being a potential high-emitter (DMV wouldn't issue my registration until I did). But even with the Bosch 3s, it passed (Though I did notice that the HC levels were seriously close to exceeding the CARB limits at 15mph and 25mph). But hey I can't complain.