W201

Suspension

Diagnosing Loose Front End Steering

Inspect the tie rod ends first for wear

Interior

Inside Door Related Problems

Failure to do preventative maintenance could lead to some very expensive repairs

Body and Exterior Trim

Finding your Mercedes Factory Paint Color Code

This can sometimes be a real challenge if you do not know where to look

$14.95

Engine Coolant Temperature Sensor

SINGLE pin - located on left side of cylinder head by glow plugs on 1977 to 1985 OM616 and OM617 Diesel engines.

1987 190D knocking injectors

Year: 1987
Model: 190D (Turbo)
Engine: OM602
Mileage: 225,000

Problem: bad "metallic sound" - sounds like injectors knocking.

Overview:

This knocking exists at low RPM. The engine also idles very rough. It goes away when you rev the motor or place a load on the motor. If I run a thicker fuel (like clean motor oil or power steering fluid - bypassing the main tank), the knocking also almost completely goes away.

I have bled the lines. I purchased the entire injector rebuild kit (w/ new nozzles). I balanced each within 50psi. I have changed air and both fuel filters. I have removed and cleaned the main tank. I have blasted out supply and return lines (to and from) the fuel tank.

It may be worth noting that:

-> The previous owner *may* have run veggie fuel