1988 v6. 3 cylinders not working. Inj2 fuse blown. Electrical problem? (Page 3/4)
Raydar SEP 22, 04:44 PM

quote
Originally posted by danahart:

No, I had not and thank you for the reminder. I just tested this morning and 5 read 12 Ohms and one only 3. So I guess that guy is the culprit.

New question: Can I just replace 1 injector? Does it matter if it matches the others? I ask because I'm fairly sure the ones in there are not the stock ones. Is it worth sending off the troublesome one for testing/cleaning instead of replacing?





I think you found your offender.
Your replacement really should match the others. What makes you think that they are not original?
(Edit - I forgot you were running a 3.1, but most 3.1 swaps I've seen, unless they had other mods, were happy with 2.8 injectors.)
Regardless... look at the injector carefully (with a magnifier, even). Bosch injectors, and many others, have a part number cast into the side, near the connector.
What is that number? LOTS of web pages still list obsolete injectors. At least you can figure out what you've got.
If you can find it, post it up. I'll see what I can find. (I used to do that a lot, looking for injectors that would make my built 3.4 happy.)

[This message has been edited by Raydar (edited 09-22-2024).]

danahart SEP 22, 08:52 PM
I remember the previous owner told me he replaced the injectors because I recall him saying he liked the multi-spray pattern the ones on it vs the more concentrated stream in the original...or something like that.

Good idea on the numbers. The injector reads "A 8089 17084888". I'm not sure how important the first numbers are but I see some hits on Amazon and Ebay that have the 17084888 part of the number. They look extremely similar but not exact to the ones I have. Do the injectors have that much variance in the flow rate so that I need to match exactly? I could get just one of these and roll with it or maybe it is better to just get 6 remanufactured ones off ebay if those are an ok option and cheap . I also see both reconditioned ones and "new" ones on ebay. I'm leery of cheap "new" parts and they might be chinese junk. I would lean toward a reconditioned old one but would love some input here as I know nothing about fuel injectors.

https://www.ebay.com/itm/293394313874 (One injector)
https://www.ebay.com/itm/275848635391 (set of 6 injectors)




quote
Originally posted by Raydar:


I think you found your offender.
Your replacement really should match the others. What makes you think that they are not original?
(Edit - I forgot you were running a 3.1, but most 3.1 swaps I've seen, unless they had other mods, were happy with 2.8 injectors.)
Regardless... look at the injector carefully (with a magnifier, even). Bosch injectors, and many others, have a part number cast into the side, near the connector.
What is that number? LOTS of web pages still list obsolete injectors. At least you can figure out what you've got.
If you can find it, post it up. I'll see what I can find. (I used to do that a lot, looking for injectors that would make my built 3.4 happy.)


[This message has been edited by danahart (edited 09-22-2024).]

Raydar SEP 23, 12:00 PM

quote
Originally posted by danahart:

I remember the previous owner told me he replaced the injectors because I recall him saying he liked the multi-spray pattern the ones on it vs the more concentrated stream in the original...or something like that.

Good idea on the numbers. The injector reads "A 8089 17084888". I'm not sure how important the first numbers are but I see some hits on Amazon and Ebay that have the 17084888 part of the number. They look extremely similar but not exact to the ones I have. Do the injectors have that much variance in the flow rate so that I need to match exactly? I could get just one of these and roll with it or maybe it is better to just get 6 remanufactured ones off ebay if those are an ok option and cheap . I also see both reconditioned ones and "new" ones on ebay. I'm leery of cheap "new" parts and they might be chinese junk. I would lean toward a reconditioned old one but would love some input here as I know nothing about fuel injectors.

https://www.ebay.com/itm/293394313874 (One injector)
https://www.ebay.com/itm/275848635391 (set of 6 injectors)




Based upon the seller reviews, I would not buy the matched set. Guy has got fairly crappy ratings, with descriptions of the problems the buyers had.
I might be inclined to buy the single injector.

I found a similar one at Fuel Injector Connection (kind of local to me), but the single injector is over $40, and is just showing the application. No part number.
Yeah... no.

It also looks like that part # - and several others - has been superseded by 5235136
https://www.motormanfuelinj.../4527999/4589683.htm

There are tons of those, including matched sets, on Amazon. Just pay attention to the seller, and to the reviews. It can be a crapshoot.

[This message has been edited by Raydar (edited 09-23-2024).]

danahart SEP 23, 02:53 PM
Thanks for the advice. I'm leery of ordering off Ebay so appreciate the link to the MI injector place. I'd feel better ordering from an injector place even if a bit more. Is there any way to tell that LB my current injectors are? 15lb, 19lb etc? I don't see where it is stated anywhere.


quote
Originally posted by Raydar:

[QUOTE]Originally posted by danahart:

I remember the previous owner told me he replaced the injectors because I recall him saying he liked the multi-spray pattern the ones on it vs the more concentrated stream in the original...or something like that.

Good idea on the numbers. The injector reads "A 8089 17084888". I'm not sure how important the first numbers are but I see some hits on Amazon and Ebay that have the 17084888 part of the number. They look extremely similar but not exact to the ones I have. Do the injectors have that much variance in the flow rate so that I need to match exactly? I could get just one of these and roll with it or maybe it is better to just get 6 remanufactured ones off ebay if those are an ok option and cheap . I also see both reconditioned ones and "new" ones on ebay. I'm leery of cheap "new" parts and they might be chinese junk. I would lean toward a reconditioned old one but would love some input here as I know nothing about fuel injectors.

https://www.ebay.com/itm/293394313874 (One injector)
https://www.ebay.com/itm/275848635391 (set of 6 injectors)




Based upon the seller reviews, I would not buy the matched set. Guy has got fairly crappy ratings, with descriptions of the problems the buyers had.
I might be inclined to buy the single injector.

I found a similar one at Fuel Injector Connection (kind of local to me), but the single injector is over $40, and is just showing the application. No part number.
Yeah... no.

It also looks like that part # - and several others - has been superseded by 5235136
https://www.motormanfuelinj.../4527999/4589683.htm

There are tons of those, including matched sets, on Amazon. Just pay attention to the seller, and to the reviews. It can be a crapshoot.

[/QUOTE]
Patrick SEP 23, 03:16 PM

Yes, it was nine years ago... but I got a heck of a deal on a set of six flow-matched rebuilt injectors for my Formula.

The total cost, including shipping (with no cores required)... $76.95

They were from Precision Auto Injectors. I don't know if they currently have anything suitable for a 2.8/3.1 now or not.

Raydar SEP 25, 11:56 AM

quote
Originally posted by danahart:

Thanks for the advice. I'm leery of ordering off Ebay so appreciate the link to the MI injector place. I'd feel better ordering from an injector place even if a bit more. Is there any way to tell that LB my current injectors are? 15lb, 19lb etc? I don't see where it is stated anywhere.




They don't publish that info nearly as often as you would expect. I have spent hours looking around and cross-matching part numbers, etc.
I would expect 2.8 and 3.1 injectors - and replacements designed for those engines - to be somewhere between 15 and 17 lbs. Leaning toward 15. 17s were considered ideal for 3.4s, but they were difficult to find in the type that we were using.
All of yours seem to be the later style. If it runs okay, I would just use the type that you've got. (Sometimes - but not always - changing injector types will cause "hunting idle" issues. But if you're good, just carry on.)
Dukesterpro SEP 26, 02:46 PM
I have 6 good injectors off my 2.8 v6. Id let em go for 80 bucks for the set (that includes shipping). Ill even throw in the fuel rail.
danahart SEP 30, 10:15 AM
Update.

I ordered a reconditioned fuel injector from a injector speciality place. It came and I got it inserted without issue. Got everything back together and the car cranked no problem. I was excited until I drove it and ...something is wrong. The engine sounds rough and is has less power than it should. So I parked it and haven't had time to work on it since. So either that new injector was bad or I messed something up when reassembling. I looking over everything and don't see anything out of place. I took before photos at different steps and all looks the same. So I'm a little frustrated at this point. I guess my plan was to see if it is the injector first by pulling the distributor wires one at a time for a quick sec while the car is idling and see if it changes the idle any. I figure if the injector isn't working, that should be pretty obvious by doing that. Let me know if that is a bad idea.

After that I can only think to pull off the manifold again and recheck all connections, etc to make sure everything is correct. Maybe something came off that I can't see at this point.
Patrick SEP 30, 11:35 AM

Perhaps it goes without saying... but check the injector fuse(s) again.
danahart SEP 30, 02:48 PM
Yes, I should have mentioned...the fuse is fine. Not blown.


quote
Originally posted by Patrick:


Perhaps it goes without saying... but check the injector fuse(s) again.