Callmewhitexr7
Registered User
I did a tune up on my car the other day and on my number five cylinder i found this plug. All the other plugs looked to be fine. What caused this and how do i fix it?
Callmewhitexr7 said:I did a tune up on my car the other day and on my number five cylinder i found this plug. All the other plugs looked to be fine. What caused this and how do i fix it?
Well, ya that too. 274rwhp is too much for stock injectors. I hope you have at least 36's in there.Jason Wild said:I would say something got a little hot. Might be time for some biger injectors if your car is moded.
I'm starting to see a trend with the #5 cylinder. With stock injectors and bolt-ons, I managed to crack the ringlands on the #5 piston. On the next engine (all of the internal goodies w/ 42lb injectors), I burnt the electrode completely off the #5 spark plug and melted the piston. Could the #5 injector be getting the least amount of fuel due to the rail design?Callmewhitexr7 said:I did a tune up on my car the other day and on my number five cylinder i found this plug. All the other plugs looked to be fine. What caused this and how do i fix it?
Kurt K said:I'm starting to see a trend with the #5 cylinder. With stock injectors and bolt-ons, I managed to crack the ringlands on the #5 piston. On the next engine (all of the internal goodies w/ 42lb injectors), I burnt the electrode completely off the #5 spark plug and melted the piston. Could the #5 injector be getting the least amount of fuel due to the rail design?
Regardless, you definitely need to step up to 36's.
Jason Wild said:Dave,
Is it time we start looking at makeing a new set of fuel rails for these cars. I can think of one person thats had the same problem as well as 2-4 others that will be soon as well.?
All these Idea's Just not the time need for it all.
I disagree that the injector can be the only problem. Sure it could be a single injector, but I find it strange that (at least for me) 2 different engines, with 2 different sets of injectors had the same problem with #5 cylinder. On the stock engine, I just wrote it off because I needed an excuse to build my new engine. On the new engine, I was using brand new 42 lb injectors. I not only burnt the electrode off the plug, but I melted the piston. I sent the injectors out to have them tested; the all flowed within 2% of each other. The only constant between the 2 engines was the wiring harness and the fuel rail.joe debattista said:It has to be that injector if it is only burning up that one cylinder. Check it again. If it is doing it again, take that injector out and have it check and cleaned or replace it w/ a new one. It couldn't be the horsepower issue because they would all be burning up because the entire motor is running lean. Good Luck. Investigate that cylinder, not the entire fuel system. Do a leak down test on the motor too.
Good Luck.
- Joe