help
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
Sorry for all the questions but are the injectors new or rebuilt? Stock or larger injectors? Also was that the only work done to the truck?
I would have to believe that there is an injector issue. You could switch the injector with one next to it and see if the same thing happens.
I would have to believe that there is an injector issue. You could switch the injector with one next to it and see if the same thing happens.
Thread Starter
|
Junior User
Joined: Jul 2008
Posts: 75
Likes: 0
From: kentucky
Trending Topics
Post Fiend
Joined: Apr 2004
Posts: 12,835
Likes: 3
From: Silver Lake Dunes, MI
If it were the injector the problem would follow the injector. So if it was number 6 then you put 6 into cylinder number 4 and it smoked until you unplugged number 4 now then the injector is the issue.
Is that what happened or did the issue stay with number 6?
If it stayed with number 6 even though you moved the injector there is either a mechanical issue with that cylinder (no compression) or there is an electronics issue holding that injector open.
Is that what happened or did the issue stay with number 6?
If it stayed with number 6 even though you moved the injector there is either a mechanical issue with that cylinder (no compression) or there is an electronics issue holding that injector open.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
Pull the valve cover and take a straight edge and lay it across the solinoids. If the problem stayed in #6 most likely the nozzle seal (copper washer)stayed in the injector bore from the old injectors. The straight edge will show this. That will cause issues similar to this. Just a shot. Or, there has to be a problem in the injector itself. But if it stayed in the cylinder, inspect the injector cup very closly for cracks or the copper washer. Just my .02
Lead Driver
Joined: May 2007
Posts: 8,606
Likes: 13
From: Belair md
has to be elec as in idm or frayed wires. check the wire harnes as it rund over the driver valve cover and inspect all of it. if you have access to a scan tool run an injector electrical test. if you dont you could try idling the truck with the valve cover off and use a stethescope (screwdriver) on the solonoid to see if its staying open or if its pulsing.