|
|
|
#1
|
|||
|
|||
M103 oil pump longevity (loud valvetrain on startup)
Our 89 300TE (190K miles, Mobil 1 since 60K, original valvetrain) gives me pause on startup. Oil pressure gauge goes to 1 bar, and then it's 2-3 seconds until it reaches 3 bar on fast idle. You can hear the valvetrain clicking until oil pressure gets above 1 bar. Runs perfectly after that.
This is my first vehicle with this kind of mileage - any thoughts/experience on longevity of oil pump or other causes of this? THANKS Brian |
#2
|
|||
|
|||
Make sure you use the correct Bosch or other quality replacement oil filter with a built in anti-drainback valve. Filters without them will fit, but the oil can drain out, even overnight, and it will take a few seconds for the oil pump to refill them and achieve full oil pressure.
Duke |
#3
|
|||
|
|||
The first thing to check is the sending unit, which is not only the likely problem, but also cheap compared to everything else it could be.
|
#4
|
||||
|
||||
Possible noises:
Lifters that have bled down. Timing chain tensioner that needs pressure. Timing chain itself. You may need some top end work, or simply a new timing chain and tensioner. If never done, I'd bet the chain and tensioner are done.
__________________
John Shellenberg 1998 C230 "Black Betty" 240K http://img31.exs.cx/img31/4050/tophat6.gif |
#5
|
|||
|
|||
Mine just had timing gear replaced and it has a similar problem. after a few seconds, it quiets down. How would one know if the oil sender is not working?
__________________
currently just 1989 300SE 185k miles |
Bookmarks |
|
|