I actually noticed it after replacing the plugs. I put in oe ngk. I did pull them again and verify gap. The injectors are Bosch 4 hole. I replaced them because 4 out of 5 were cracked. The hard start issue is still there when it's cold but starts right up when hot. I'll try spraying the injectors and tb when I get back from vacation. Is there a goto video of checking leaks with a gauge?
Cleaning the IAC valve
- Thread starter Ziondogg
- Start date
I actually noticed it after replacing the plugs. I put in oe ngk. I did pull them again and verify gap. The injectors are Bosch 4 hole. I replaced them because 4 out of 5 were cracked. The hard start issue is still there when it's cold but starts right up when hot. I'll try spraying the injectors and tb when I get back from vacation. Is there a goto video of checking leaks with a gauge?
Yes, these are the ones I ordered.
https://www.ksuspensionfab.com/store/p71/Remanufactured:_4_Port_Upgrade_Injectors_YJ/LJ/TJ.html#/
Not trying to be harsh but you’re making us pry info out of you and not answering questions. We genuinely want to help you get it running right but can’t if you won’t give us info and answer questions.
When you diagnose problems, you start trying to eliminate stuff. Once you have eliminated everything, you are usually left with the solution to your problem. Also, learn from my mistakes (and others) start with the cheap stuff first….. I once replaced $250 worth of parts on my F150 only to find that the issue was a $10 vacuum check valve….and that’s just one story…..
When you replace something for maintenance (like spark plugs) and a new problem pops up, reinstall the old parts and see if the problem goes away. Did you buy the plugs off Amazon? Amazon is notorious for counterfeit parts like spark plugs. NGK makes good plugs….but even NGK can put out a bad one occasionally. And, if they aren’t really NGK….all bets are off.
Last edited:
Granted.
But did you use the new o-rings that came with the injectors... assuming they came with o-rings. They're two for each injector. They need lubrication like motor oil (per the FSM procedure) when installed to prevent tearing.
-Mac
Yes they came with top and bottom o rings and came pre lubed
They didn't look bad. All were the same. I just ordered some Autolite xp985 and going to see if that changes anything.
Changed the plugs and it's still there. Also sprayed carb cleaner on all the injectors, pcv valve and throttle body with no change to rpm's. Where do you hook up a gauge to check that way?
No 4 of the 6 were cracked. Right now I'm really just trying to find out where to hook up a gauge to check for vacuum leaks.
Fine, they were cracked, but trust me that the replacement injectors could be bad. Get a scan tool with live data. Look at your STFT and LTFT. If the combined total is above 10% at 2000 rpm, you’ve got a lean condition. My guess is you’re negative because the PCM is trying to remove the extra fuel you’re shoving down its throat with the aftermarket injectors.
Similar threads
