W116.org

okay cool
how do i check the cam oiler?

If they did any work on the gasoline fuel system that required opening the lines, there is a chance that something got in and is holding an injector open.  Did they add any injectors for cold start or WOT enrichment?

I also wonder about timing if the distributor was moved and I still think the plug wires could be out of whack.

Michael

hmmmm not that i know of but i guess i could ask them.

If the plug wires were wrong would the engine be running rough ? It seems to be running fine once operating temp is reached, no complaints from me there.

I remember the LPG guy saying something about a stepper motor, which , from memory allows more gas into the system on startup and when the engines warms up it reduces it. Perhaps its reducing the amount of LPG too early,
would the engine running lean make this noise?

If the engine is running too lean, it can make that sort of noise for sure.
It sounds like it could be leaning out prematurely and perhaps too much.

To check the cam oilers, you need to pull both rocker covers, which is very straight forward.
You can get a bit of an idea by shining a torch through the oil filler cap as well. If the oilers are loose, you must replace the fittings which are inexpensive.

Tim

Take off your cam covers.

Haha, you beat me to it 13B.

thanks guys
sounds like its leaning out to me.
I'll take it to the LPG place.

As you can see i have a lot to learn, but ill get there some day

I messed around with the mixture screw a bit and the noise appears to have  gone away... touch wood!

I hope it's your lucky day.