|
|
|
#1
|
|||
|
|||
1981 300sd lack of power
I just bought this car and was told it came out of Flordia. The car seems to have a lack of power. I can run it up to 70 mph on a flat road. But when I start to to go up hill I can not maintain any speed.
I have looked at the turbo and it is spining when the engine is running. I was thinking it might be a timeing problem. The car came from Flordia to Colorado. The car has no problem starting and runs smooth. Help Thanks Preston |
#2
|
|||
|
|||
The first thing to check on these is the banjo bolt and the lines from the intake manifold to the overboost switch to the ALDA.
Do a search on these terms using the search function if you are unfamiliar with these procedures. The turbo works fine but the signal for more fuel is blocked because of carbon buildup inside the small tubes. Also, check do-it-yourself resources forum on this site. The topic has been addressed at least 100X. It's very common. |
#3
|
|||
|
|||
pkbell,
Many times when a Diesel engine has low power its because it isn't getting enough fuel. It will start and run OK but not enough fuel is getting to the engine to have power at full load. So, check the fuel filters and the fuel tank strainer. First take off the primary ( inline) filter and blow thru it. Fuel should squirt out easily. If it doesn't clean or replace the filter. If the primary fuel filter seems OK and still no power, change the secondary filter. Still no power, do the fuel strainer test which you can find with a search. P E H |
#4
|
||||
|
||||
Also check to make sure the linkage is giving you full throttle swing. Sometimes people will monkey with the levers and they just dont give you full travel.
__________________
1981 300D 147k 1998 VW Jetta Tdi 320k 2001 Dodge Ram 2500 141k 1979 300D 234k (sold) 1984 300D "Astor" 262k(sold) Mercedes How-To and Repair Pictorials I love the smell of diesel smoke in my hair |
#5
|
|||
|
|||
After digging in to things I found a broken line behind the transmission dip stick. I also found a crack in the line that went to the turbos dump valve. The repairs to both made a differance.
Now I was thinking about getting a turbo boost meter ans set the boost. I have read that I can up the boost to 13psi if needed. Will that be to high? I am a mile high here in Denver. I am dealing with a car that has around 200,000 miles. Thanks everyone Preston |
#6
|
|||
|
|||
Quote:
However, I don't think anything over about 14 psi will get any more fuel from the IP. Dave did this awhile back. All that ever was accomplished was greater charge air temperatures. The vehicle didn't get any more fuel and didn't get any additional performance. |
Bookmarks |
|
|