Injector Problems
Thread Starter
Cruising
Joined: May 2011
Posts: 12
Likes: 0
Injector Problems
Had leaky injectors on my 88. Bought a rebuilt set and later found out that the car hesitates badly when you floor it. Later found out that the injectors I bought are 24# and the factory ones are 22#. Could this be causing the problem? Bought another set of rebuilt 22's and they don't look at all like the originals or the 24# replacements..no locking clips. But I tried installing anyway, as the directions say they will fit. Got fuel leaks all over the place at the top of the injectors, some do not move freely in their mount. Should I put the 24# back or find 22's again. Also, there are codes 32 and 36. Not sure if this is related to this but I thought I should put the proper injectors in first before chasing down the codes.
Instructor
Joined: Jan 2015
Posts: 226
Likes: 22
From: Dade City Florida
When I did my upgrade to the newer style yellow injectors. I ordered a new set of orings. I put the new on the top. On the bottom I used the old ones and pushed them up high out of the lower grove then installed the new one in the grove. The bottom will seal it on the bottom the second one helps to keep the injector from pushing to deep into the intake. This allows a better seal on the top oring since there is no lock.
Thread Starter
Cruising
Joined: May 2011
Posts: 12
Likes: 0
When I did my upgrade to the newer style yellow injectors. I ordered a new set of orings. I put the new on the top. On the bottom I used the old ones and pushed them up high out of the lower grove then installed the new one in the grove. The bottom will seal it on the bottom the second one helps to keep the injector from pushing to deep into the intake. This allows a better seal on the top oring since there is no lock.
Instructor
Joined: Dec 2016
Posts: 241
Likes: 77
From: Arlington VA
The flow rate has nothing to do with leaking injectors internal or external. I presume you're talking about Bosch III injectors. Leaking at the fuel rail is damaged or not seated O-rings.
I know everybody recommends putting the injectors in the manifold first which can be done but to me it's really fussy and prone to leakage. So I lube all the o-rings install into the fuel rail (don't push all the way in till they bottom-the o-ring can be damaged) and then install the assembly to the manifold. That's the way I do it with very few problems as I said not recommended by others.
Pressurize before installing everything else to check and you should be good to go. For stock L98 22 or 24 will work just fine.
I know everybody recommends putting the injectors in the manifold first which can be done but to me it's really fussy and prone to leakage. So I lube all the o-rings install into the fuel rail (don't push all the way in till they bottom-the o-ring can be damaged) and then install the assembly to the manifold. That's the way I do it with very few problems as I said not recommended by others.
Pressurize before installing everything else to check and you should be good to go. For stock L98 22 or 24 will work just fine.
Thread Starter
Cruising
Joined: May 2011
Posts: 12
Likes: 0
When I did my upgrade to the newer style yellow injectors. I ordered a new set of orings. I put the new on the top. On the bottom I used the old ones and pushed them up high out of the lower grove then installed the new one in the grove. The bottom will seal it on the bottom the second one helps to keep the injector from pushing to deep into the intake. This allows a better seal on the top oring since there is no lock.
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