Engine miss

[sagebel]

It passes CCT at idle. Can I run CCT in Park @ 1650 rpm? It would be best if I could run it on the road but I am pretty sure that cannot be done.

 

[elkyss81]

I don't see why not? Another way you could do it....would be messy, but leave the valve covers off, and one at a time, unplug each connector on the injector and see which ones make a difference.

 

[sagebel]

Problem is, I only feel it while driving. This can't be good, post #666.

 

[iracemine]

did this happen all a suddn??? like bad fuel??

 

[sagebel]

Nothing new, been happening for about 4 months.

 

[elkyss81]

What if you try to powerbrake it? If it'll do it when you powerbrake, then you could disconnect one injector at a time and re-powerbrake to see which ones are acting up. Maybe also do a compression test?

 

[sagebel]

Nothing whil powerbraking. I did feel it at about 1300 rpm this morning when it was still cold (EOT < 50*) CCT is invalid when pedal motion is detected. I did a compression test in July:

#7) 410 #8) 390
#5) 420 #6) 380
#3) 380 #4) 380
#1) 390 #2) 390

 

[elkyss81]

Odd....you should feel it when you powerbrake if its an engine miss.

 

[sagebel]

I order injector o-rings and an IPR o-ring kit yesterday. Plan is to pull, inspect, and replace injector o-rings. Pull IPR clean and replace o-rings. Hopefully int will be something obvious like a cracked nozzle.

 

[elkyss81]

Hope so!