Glow light on and fuel injector leaking after replacement
Even after installing a replacement injector with brand new copper washers and clamps, the engine can still go into limp mode or trigger a glow light within minutes. The recurring failure is often caused by other older injectors on the same bank that are cracked and taking in moisture, which leads to rough idling and misfires without always throwing a check engine light.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
Glow light on and fuel injector leaking after replacement
- 1waited ten minutes, drove homeDid this help you?
- 2Unplugging individual coil packs manually to identify which cylinder is misfiring when no check engine light is present.Did this help you?
- 3Replacing the cracked OEM injectors with aftermarket alternatives since the originals are discontinued.Did this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“I noticed at least 2 other injectors on the same bank were obviously cracked but not as bad.”source ↗
“The ac compressor shrunk in the cold weather and blew the seal out so I had very lightly rinsed just the compressor off, and like 8hr later I had a misfire when I started it”source ↗
“That's how I found out my '00 Grand Cherokee had cracked injectors. Idled rough in the rain and after a car wash.”source ↗
“Mine was too stuck up to admit it had an issue so it never gave me a cel light until I started unplugging coil packs to see what was up.”source ↗
“Put in a second hand fuel injector after car went into limp mode, new retaining clamp and bolt, new leak off return pipe, new copper washers, drove the car and two minutes into it the glow light came on”source ↗
“took it for a forced regen, ten minutes in, glow light comes on, i pull over and lift the bonnet and see that looking at me”source ↗
Where this came up
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