Injector and ignition coil help
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Joined: Oct 2022
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Injector and ignition coil help I just bought a dirt cheap '02 Yukon Denali, 6.0 LQ4. Not a road truck, not a race truck, just a fun toy to burn some tires every once in a while. I'm not seeking to make big power or chasing E.T., I just want cheap and functional for now.
For one, I want to replace the coil and injectors. A digital thermometer on the headers is telling me cylinder 8 wasn't firing properly, even after shuffling the coils around, and also tells me at least one of the coils is on it's way out. After a bit of poking at it, i've concluded that a few of the coils are firing a little weakly, and I'm 90% sure the low temp on header #8 is because the injector isn't firing properly.
Item one: I've found some Sparkwhiz UF271 ignition coils on amazon for $120, are these worth getting?
Item two: Injectors. GB Remanufacturing on rockauto, part number 83211180. Again, really cheap injectors. $25 each with a $9 core. (35 without core). I have found many sets for cheaper on ebay, but I'm not 100% they're the right ones.
What would I be looking for to be able to shop online for the right injectors for the truck manifold? There's just so many options available that I just have no idea if what I'm looking at would be the right ones or not. I've tried searching this and many other forums, but once again, the sheer volume of topics about injectors that don't quite answer my questions is making this difficult.
If anyone has any other recommendations for cheap but at least somewhat reliable coils and injectors, I would love to hear!
For one, I want to replace the coil and injectors. A digital thermometer on the headers is telling me cylinder 8 wasn't firing properly, even after shuffling the coils around, and also tells me at least one of the coils is on it's way out. After a bit of poking at it, i've concluded that a few of the coils are firing a little weakly, and I'm 90% sure the low temp on header #8 is because the injector isn't firing properly.
Item one: I've found some Sparkwhiz UF271 ignition coils on amazon for $120, are these worth getting?
Item two: Injectors. GB Remanufacturing on rockauto, part number 83211180. Again, really cheap injectors. $25 each with a $9 core. (35 without core). I have found many sets for cheaper on ebay, but I'm not 100% they're the right ones.
What would I be looking for to be able to shop online for the right injectors for the truck manifold? There's just so many options available that I just have no idea if what I'm looking at would be the right ones or not. I've tried searching this and many other forums, but once again, the sheer volume of topics about injectors that don't quite answer my questions is making this difficult.
If anyone has any other recommendations for cheap but at least somewhat reliable coils and injectors, I would love to hear!
TECH Fanatic
Joined: Jan 2018
Posts: 1,250
Likes: 239
From: Dade City, Fl.
Hi Smokey, you can check the injectors and clean them yourself. There are videos online how to do it. I would consider a trip yo the U-pull-it yard to grab a few coils from a truck.
Did you do a compression check to verify all the cylinders are in serviceable condition? That would make cylinders not fire very well
Did you do a compression check to verify all the cylinders are in serviceable condition? That would make cylinders not fire very well
