Glow plugs do not last forever. I have found they generally need to be replaced about every 2 years for peak performance. If your diesel starts hard when cold, or starts but runs rough for 30 to 60 seconds before smoothing out, or the glow dash light flashes right after startup, then it may be time to replace the glow plugs. They should be replaced in sets unless you have the odd failure of just one fairly new plug.
Product Details
Fits the following: 126 chassis 300SDL 1986 and 1987 and 124 chassis 300D 300TD for model year 1987 only. This kit includes 6 new Bosch glow plugs and Kent's PDF DOWNLOADABLE Glow plug removal and replacement manual. This can be a tricky job but with Kent's manual you will have them replaced in no time!
Please note that you will also need to replace the intake manifold gasket when changing the glow plugs. CLICK HERE to view the required gasket.
SVO WVO: If you are running SVO WVO fuel we have found that glow plugs may not last as long compared to running diesel fuel. The tips and chambers tend to coke up faster. Super important that you ream your glow plug chambers more often. We do also sell this kit with the glow plug reamer tool if you are interested.