Vacuum leak at injector seals
#1
Junior Member
Thread Starter
iTrader: (10)
Join Date: Jun 2011
Location: Detroit Burbs
Posts: 299
Total Cats: 3
Vacuum leak at injector seals
I just got my 1.8L swap running in the last week or so. I used RX-8 yellow injectors for my build, and noticed a vacuum leak at one of the injector seals to the cylinder head. I sprayed brakeclean at the seal when at idle, and could hear idle speed change, and saw the engine go rich on the Wideband sensor.
I remember when I was assembling the fuel rail - I used brand new (parts store aftermarket) injector seals, and they seemed really loose on the RX-8 injectors. Not exactly hot-dog-in-a-hallway loose, but certainly looser than the stock injectors.
Since I used brand new seals, what should I do to fix this issue? Buy a different brand of seals?? Use rtv during installation? Add a extra O-ring to the stackup?
I remember when I was assembling the fuel rail - I used brand new (parts store aftermarket) injector seals, and they seemed really loose on the RX-8 injectors. Not exactly hot-dog-in-a-hallway loose, but certainly looser than the stock injectors.
Since I used brand new seals, what should I do to fix this issue? Buy a different brand of seals?? Use rtv during installation? Add a extra O-ring to the stackup?
#2
Senior Member
iTrader: (7)
Join Date: Oct 2011
Location: Horse and Buggy, PA
Posts: 704
Total Cats: 21
You could double check this but I seem to recall FM turbo install directions saying that stacking two could be done. I can't remember if that was in reference to auto parts store Mazda seals or generic Ford seals that could be substituted.
#3
Slowest Progress Ever
iTrader: (26)
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 6,025
Total Cats: 304
If you had the huge stock pintle type injectors, and you went to the Bosch type (rx 8 injectors), the grommets are slightly different. Use grommets that were on '99 stock injectors.
Thread
Thread Starter
Forum
Replies
Last Post
stoves
Suspension, Brakes, Drivetrain
5
04-21-2016 03:00 PM