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Posted by Will (in IL) on Sunday, February 10, 2008 at 11:42:52 :
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Well Gabrielle and I took the Frankie (the M) out for a ride yesterday after returning from visiting the new Harbor Freight store that opened up just under an hour away. It was a nice day, and the temperatures were in the mid 40’s. After the engine missing that occurred the last time out, 10 degree day, I was eager to see if it was related to the extreme cold. Well to my dismay, when ever we would be cruising at road speeds (2,800 RPM and 55 MPH) the miss would occur, I could accelerate or decelerate and no problems. No issues when starting from a stop either. I have also noticed that the truck has seems to of lost some of it’s ideal torque, as in order to start (1st or reverse) I have to give it a little accelerator or it dies.
Now I’m still fighting the tuning of the Holley TBI. And based on some of the posting I’ve read on the unit (I wish I’d found them before I bought it), I’m thinking I’ve made a mistake. I should probably go to a good off road carburetor. I did pull a plug to see how it looks, and to my eyes it looks good, with a possible indication of High Speed Glazing (sudden combustion chamber temperature rise). If that is the case, then it could explain the missing, and I would need to replace the plugs with a colder ones. My current plugs are NGK V-Power GR4 Spark Plugs.
So now the question is do I need to go to a colder plug, or is the plug OK, and I need to give up on the Holley Fuel Injection? Any suggestions or Ideas, Help?
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