Rusty Bowtie
General Category => General Discussion - Intros => Topic started by: 28chevyguy on April 02, 2019, 04:25:46 PM
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anyone ever bought injectors off ebay? got a set of 8 for 50 bucks … really cheap . Got them today, they actually have bosch part numbers on them but the box says china??
I have a high hp Pontiac grand prix turbo retuned with 36lb injectors , they were used but professionally cleaned before installed with the tune , the car ran amazing but now years later is making white fuely smoke and the car is running pig rich 10:1 !!!!
fuel regulator was tested and seems to work fine, im leaning towards a mechanical malfunction within the injector (s).
as if one of them is sticking open , being Multiport rather than series injection , that doesnt help much either!
So i bought these new injectors but im kind of weary installing them with the china logo on the box ??? i was reading the china injectors dont have the bosch numbers on them but these ones do ... i really dont know what to think about them .
The only thing keeping me from driving the car is this white smoke so i really need to get it figured out ,, its not oil smoke or coolant.
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Have you tried a laser temperature gauge on the exhaust header to determine if all eight are approx at the same temp?
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no i don't have one of those, should grab one as they are great tools for tuning. I have custom log manifolds anyway , im actually cracking the upper intake off right now . going to get a quick ohm count on them first
so i have 11.5-11.6 across the board, going to try to watch the spray pattern now... another dam gremlin
EDIT FIXED ....got off easy this time , just tossed them in and no more smoke. will see how they hold up under boost .
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Sounds like an easy fix. You bought them, might as well try them ;D
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yea there was no mention of china but I should have known... dam china logo was big on the box too hahaha freaked me out
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From what I've read about injectors they seldom fail but they do get clogged and gummed up. Sending them out for cleaning/flow check gets expensive (over $20 EACH). There are several DIY videos on how to clean them at home. Good advice to use a heat gun on the headers which may give you lots more info. Have you checked the O2 sensors?
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Yea the last set was sent out but they were abused for about 5 years over all … hard boost takes a toll.
The car is perfect now all fixed , air fuel ratio at idle went from 10:1 back up to normal approx. 13:1 maybe a little higher than that.
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I use STP or another brand of FUEL INJECTION CLEANER right in the tank every 4 tanks. They used to have tv commercials by STP showing a fine mist spray instead of semi clogged stream.
Convinced me. Never had an injector taken out to have serviced . And I keep my cars until the end.
mike
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yes I agree with cleaning them but in my case one had a mechanical malfunction , over fueling … the opposite of being clogged. You can ohm them and keep em clean as you want , if they mechanically fail … it will need rebuild or replace.