Or should I swap number 6 injector to another one and see if the problem follows
Or should I swap number 6 injector to another one and see if the problem followsyes, cylinder 6 is not contributing. Gotta check spark, fuel and compression on that cylinder.
If you want to check and make sure the wiring to #6 is good then get a noid light from the parts store and that will tell you if the injector is getting voltage. If that checks good then I would swap it with one of the other cylinders as you mentioned and see if the problem follows it.
From right behind the throttle body, it's a Holley systemax 2 intake so one of the 3 ports back there now after running it for about 20 minutes it went all the way to the green section on the gauge and stayed there. . Timing is at 12° initialI’d say it’s a little low. Mild cam is usually somewhere between 12-16. Lots of things can affect it like timing being retarded and/or a vacuum leak(s).
Where did you pull the vacuum at?
So I know the injector atleast primes, because I put the fuel rail in a bucket and zip tied them all to the rail to check before installing them because I had 2 bad ones from the first new set. But that doesn't mean it's working correctly. Car idles great, just when you put a load on it it won't spin the tires or anything then it pops in the intake. I'm going to compression test it and noid test the injector, and also move it to a different cylinder and see if it moves with itIf cyl 6 is not firing, those numbers are going to change once you get it going.
I'd move past looking at Vac and investigate cyl 6.
BTW, my car sat for about 8 year or so without being started. In 2009 i got it going again and started driving it. I drove it around a FULL YEAR on 7 cylinders with my cylinder 4 dead. I had a minor vibration but that was about it. Car ran fine and had adequate power. Did the CBT and found cyl 4 was not contributing. Car ran great which made me wonder how that could be. Long story short, i found the injector was dead. Not squirting at all. Swapped it out and it felt like i gained 50 HP. Can't believe I drove a full year (granted, only a few hundred miles) like that and didn't even notice.
These are the plugs from when the one injector wasn't working. That's why that one plug looks brand new. It's not oil. It's definitely carbon AFR gauge is a Autometer. Before this top end kit the car literally ran perfect. I would have drove it from Florida to California and not thought twice about it. Everything happened after this top end kitIs your AFR gauge good quality because if the plugs are showing it rich they don’t lie. Are you sure they are showing rich or is it oil?
These are the second setThese are the plugs from when the one injector wasn't working. That's why that one plug looks brand new. It's not oil. It's definitely carbon AFR gauge is a Autometer. Before this top end kit the car literally ran perfect. I would have drove it from Florida to California and not thought twice about it. Everything happened after this top end kit
It's a wide band. The sensor is on the driver side which is where the bad cylinders coming from, So maybe that's why it's getting funky readings. I don't have an extra computer. I have a complete Holly Terminator x system sitting in the box. I just bought it when I thought they were going away for future turbo stroker motor builds.I just do not see how the AFR is reading correctly if the plugs are fuel fouled. Is the Autometer unit a narrow band or wide band? Either way it just sounds like it has issues but regardless that does not solve the problem. Any chance you have another ECU you can try?
So I put the little cheap spark tester in line and it was lighting up. Doesn't mean it's enough spark tho. I'll do the compression test tomorrow and let you guys know. I appreciate all the help. I was ready to give upSwap injectors and compression test 6. It’s clearly not firing. Need to find out why
I put the inline spark tester that lights up, and it lit upHave you checked for spark on #6?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?