In the middle of a road trip! 2 questions! Lean cylinders and noisy rockers?
Hi all, i had an issue before with my carb, 1 and 4 cylinders are lean while all the rest cyldiners are dog rich. I took apart my holley 750 dp and made sure all passages were clear and didnt find a thing, I put it back on the engine and tuned the 4 corner idle with a vacuum gauage. I drove around a while and all cyldiners were pretty close in color if not a slight bit richer on some. Mostly tan though. Now about 3 months later, im having the same problem!
I just checked my plugs and all are extrememly rich except for 1 and 4 which are almost white. Im in the middle of a long trip so I cant do much to the engine, but I do have all tools I need. Im at my wifes parents house which is almost halfway through the trip, we stopped here to rest.
What would make just those 2 cyldiners run lean? How does everyone else tune their 4 corner idle carbs?
Also, my roller rockers have always been noisy, but its never been an issue because of straight exhaust. I just had a nice quiet exhaust put on the car, its almost silent under under 2300rpm, so all i hear going down the highway are the roller rockers... I asked a while back how to adjust the roller rockers and was informed how to do it properly by techinspector. He told me also to do only 1/8th turn preload. Are rollers just noisy, or should I do a little more preload? Thanks!