Bosch III Install Started
Thread Starter
Racer
Joined: Jul 2009
Posts: 454
Likes: 0
From: None None
Bosch III Install Started
Today I started to install the Bosch III injector kit for my 85 L98 (purchased from Jon at FIC). I started at about 9am, had everything taken apart by noon. Took an hour for lunch, worked till 5pm and still not done. This is some project. I did hit some snags along the way however. Everything went fine until it was time to remove the fuel rail, I kept the runners on. The fuel rail would not come off! I had to use some blocks of wood and a crowbar attached to the rail with string to pry them up. Not really what I expected. Also, I broke an injector plug while unpluging it 
. Finally, the kit that I purchased had a bunch of o-rings but the ones for the fuel rail are not the right size, anyone else encounter this? So, day 1 down and still not finished. All thats left is rebuild though and I cant wait to see the results! Tell me Im not the only one having a hard time with this project and that its worth the trouble?
Just had to share my story, a little dissapointed that its not done yet.
. Finally, the kit that I purchased had a bunch of o-rings but the ones for the fuel rail are not the right size, anyone else encounter this? So, day 1 down and still not finished. All thats left is rebuild though and I cant wait to see the results! Tell me Im not the only one having a hard time with this project and that its worth the trouble?Just had to share my story, a little dissapointed that its not done yet.
Racer
Joined: Aug 2009
Posts: 337
Likes: 6
From: Kanata ON
Today I started to install the Bosch III injector kit for my 85 L98 (purchased from Jon at FIC). I started at about 9am, had everything taken apart by noon. Took an hour for lunch, worked till 5pm and still not done. This is some project. I did hit some snags along the way however. Everything went fine until it was time to remove the fuel rail, I kept the runners on. The fuel rail would not come off! I had to use some blocks of wood and a crowbar attached to the rail with string to pry them up. Not really what I expected. Also, I broke an injector plug while unpluging it . Finally, the kit that I purchased had a bunch of o-rings but the ones for the fuel rail are not the right size, anyone else encounter this? So, day 1 down and still not finished. All thats left is rebuild though and I cant wait to see the results! Tell me Im not the only one having a hard time with this project and that its worth the trouble?
Just had to share my story, a little dissapointed that its not done yet.
. Finally, the kit that I purchased had a bunch of o-rings but the ones for the fuel rail are not the right size, anyone else encounter this? So, day 1 down and still not finished. All thats left is rebuild though and I cant wait to see the results! Tell me Im not the only one having a hard time with this project and that its worth the trouble?Just had to share my story, a little dissapointed that its not done yet.
I bought my injectors from Racetronics and they fit perfectly.
Supporting Vendor
Joined: Mar 2008
Posts: 1,762
Likes: 14
From: Cumming Ga
Today I started to install the Bosch III injector kit for my 85 L98 (purchased from Jon at FIC). I started at about 9am, had everything taken apart by noon. Took an hour for lunch, worked till 5pm and still not done. This is some project. I did hit some snags along the way however. Everything went fine until it was time to remove the fuel rail, I kept the runners on. The fuel rail would not come off! I had to use some blocks of wood and a crowbar attached to the rail with string to pry them up. Not really what I expected. Also, I broke an injector plug while unpluging it . Finally, the kit that I purchased had a bunch of o-rings but the ones for the fuel rail are not the right size, anyone else encounter this? So, day 1 down and still not finished. All thats left is rebuild though and I cant wait to see the results! Tell me Im not the only one having a hard time with this project and that its worth the trouble?
Just had to share my story, a little dissapointed that its not done yet.
. Finally, the kit that I purchased had a bunch of o-rings but the ones for the fuel rail are not the right size, anyone else encounter this? So, day 1 down and still not finished. All thats left is rebuild though and I cant wait to see the results! Tell me Im not the only one having a hard time with this project and that its worth the trouble?Just had to share my story, a little dissapointed that its not done yet.
Thread Starter
Racer
Joined: Jul 2009
Posts: 454
Likes: 0
From: None None
Hi Jon, thanks for your concern. Also, A+ job on your shipping speed! I finally got around to installing the injectors I bought months ago for my 85. Anyways, maybe its just me but none of the o-rings in the kit properly fit the fuel lines to and from the rail There were o-rings for the rails that fit fine. Then I had a few small ones and one large one, however none seemed to fit the lines. Maybe they were replaced at some point in time. Other than that is was just some inexperience with the job that slowed me down. I have all the injectors installed in the manifold and the drivers side rail is on. I think Im on the home stretch!
Supporting Vendor
Joined: Mar 2008
Posts: 1,762
Likes: 14
From: Cumming Ga
Hi Jon, thanks for your concern. Also, A+ job on your shipping speed! I finally got around to installing the injectors I bought months ago for my 85. Anyways, maybe its just me but none of the o-rings in the kit properly fit the fuel lines to and from the rail There were o-rings for the rails that fit fine. Then I had a few small ones and one large one, however none seemed to fit the lines. Maybe they were replaced at some point in time. Other than that is was just some inexperience with the job that slowed me down. I have all the injectors installed in the manifold and the drivers side rail is on. I think Im on the home stretch!
Racer
Joined: Apr 2010
Posts: 409
Likes: 1
From: New York
on mine the o rings where fine. You have to be carefull and remind everyone that the o rings to the rail when not using the c clips have to be flush before you wrench them, otherwise you can pinch them and get leaks. I made sure I set them nice before I hit them with the wrench. I could see how easily that can happen if they are not seated well enough before wrenching
When it is all said and done Im sure your gonna love it. Make sure to clean all that carbon off also while your in there
When it is all said and done Im sure your gonna love it. Make sure to clean all that carbon off also while your in there
Burning Brakes
Joined: May 2010
Posts: 840
Likes: 4
From: High Point NC
I did mine a little over a week ago. I did end up taking the runners off after I had the injectors out because I could see where they had been leaking. It's easier if you remove the EGR valve if you're not taking the runners off.
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Le Mans Master
Joined: May 2007
Posts: 8,448
Likes: 27
From: Valparaiso
on mine the o rings where fine. You have to be carefull and remind everyone that the o rings to the rail when not using the c clips have to be flush before you wrench them, otherwise you can pinch them and get leaks. I made sure I set them nice before I hit them with the wrench. I could see how easily that can happen if they are not seated well enough before wrenching
When it is all said and done Im sure your gonna love it. Make sure to clean all that carbon off also while your in there
When it is all said and done Im sure your gonna love it. Make sure to clean all that carbon off also while your in there
Thanks !
Racer
Joined: Apr 2010
Posts: 409
Likes: 1
From: New York
Ok To clarify
Ok to clarify
I noticed that when I was laying down the fuel rail on top of the injectors ( as it is instructed to do when you are not using the c clips ) and I had it on top of them my initial impulse was to grab the 10 mill and start tightening them down. What I noticed when I looked closely was that some of the o rings where snug into the female part of the fuel rail while others although they looked ready to be tightened down werent. Had I wrenched them without looking more closley I would have pinched the fuel rail and probably pinched the o ring also which would have resulted in a leak Im sure. I read about someone doing this and having leaks
Basically just make sure they are all even ( the orings going into the fuel rail on both sides before tightening it down. This is simply to avoid pinching the o ring on the sharp edges of the rail thereby preventing any potential leaks. If I left anything out or there is more clarification needed let me know and also one last note. Make sure to pressurize the system before you put the runners and tpiu back together to check for leaks once you have the rail put in. This will save a big headach later if you put it all together and find you have a leak
I noticed that when I was laying down the fuel rail on top of the injectors ( as it is instructed to do when you are not using the c clips ) and I had it on top of them my initial impulse was to grab the 10 mill and start tightening them down. What I noticed when I looked closely was that some of the o rings where snug into the female part of the fuel rail while others although they looked ready to be tightened down werent. Had I wrenched them without looking more closley I would have pinched the fuel rail and probably pinched the o ring also which would have resulted in a leak Im sure. I read about someone doing this and having leaks
Basically just make sure they are all even ( the orings going into the fuel rail on both sides before tightening it down. This is simply to avoid pinching the o ring on the sharp edges of the rail thereby preventing any potential leaks. If I left anything out or there is more clarification needed let me know and also one last note. Make sure to pressurize the system before you put the runners and tpiu back together to check for leaks once you have the rail put in. This will save a big headach later if you put it all together and find you have a leak
Le Mans Master
Joined: Jul 2007
Posts: 5,356
Likes: 2
From: No HOA, New Hampshire
Cruise-In X Veteran
St. Jude Donor '09
The first time is the most difficult. 
But the second time is a piece of cake. Last year I replaced my injectors, 2 evenings (6 hours) to get it done. This spring 2 hours to remove a mouse nest under the plenum.
But the second time is a piece of cake. Last year I replaced my injectors, 2 evenings (6 hours) to get it done. This spring 2 hours to remove a mouse nest under the plenum.
Thread Starter
Racer
Joined: Jul 2009
Posts: 454
Likes: 0
From: None None
. Its really pretty straight forward to change injectors, its just hard getting to them! I think tomorrow evening Ill be finishing them up though and hopefully it will be worth it.
Thread Starter
Racer
Joined: Jul 2009
Posts: 454
Likes: 0
From: None None
Well day 2 down and still not done. Went out this evening and worked at putting the fuel rail all back together. Pressure tested the system before the complete rebuild and....a leak. I believe its the closest injector to the passenger that is leaking. Maybe I rolled an o-ring or something. So, now I have to take it apart again, lose about another gallon of gas, and try again. Hopefully the next work session will get everything all squared away.
. I believe its the closest injector to the passenger that is leaking. Maybe I rolled an o-ring or something. So, now I have to take it apart again, lose about another gallon of gas, and try again. Hopefully the next work session will get everything all squared away.
Thread Starter
Racer
Joined: Jul 2009
Posts: 454
Likes: 0
From: None None
Im now wondering if I should change the FPR out while Im already there. Is this readily available at a local auto parts store? About how much is one going to cost? Hard to replace?
Thanks
Thanks
Le Mans Master
Joined: May 2007
Posts: 8,448
Likes: 27
From: Valparaiso
is to be careful not to "bite" the orings with the razor edge of the rails
so what about start the 8 injectors carefully into the rail , just a bit not all the way inside, then superpose the rail into the manifold and pull the injectors down enough to the manifold. i hope i explain myself.
im not sure if it works,i bit a couple of orings sometimes trying to perfectly align all 8 and make them into the rail , but the edge cut them a bit , enough to leak
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
You don't need the whole FPR , all you need it the diaphram...Here's a good price from TPIS. Piece of cake to install, just 7 screws....WW
http://www.tpis.com/parts/view/15
http://www.tpis.com/parts/view/15