News:

The Org - Serving W116 Enthusiasts since 2004!

Main Menu

Engine knocking??

Started by Ryan1980, 11 August 2008, 05:37 AM

Ryan1980

okay cool
how do i check the cam oiler?


Papalangi

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
'83 300SD, I'm back!  It's the son's new car (12/2020)
1976 450SEL, 116.033  Sold it to buy a '97 Crown Vic.  Made sense at the time.
1971 250C, 114.023
1976 280C
1970 250/8

Ryan1980

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?

TJ 450

#33
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
1976 450SEL 6.9 1432
1969 300SEL 6.3 1394
2003 ML500

13B

Quotehow do i check the cam oiler?

Take off your cam covers.
450SEL 6.9 #5440 = V MB 690 , 450SE # 43094 = 02010 H , 190E/turbo # 31548 = AOH 68K

TJ 450

Haha, you beat me to it 13B. ;)
1976 450SEL 6.9 1432
1969 300SEL 6.3 1394
2003 ML500

Ryan1980

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 :P

Ryan1980

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

WGB

I hope it's your lucky day.