Author - Brid Walker

Blowby in trucks… Does it mean a rebuild?

“My truck has blowby and Cummins says it needs a rebuild…” This is a very common complaint Jimmy and I hear from truckies: their engine is performing well, but the blowby is bad. Wear around the piston rings, grooves and liners will certainly account for the excessive crankcase pressure that shows...

“I filled my common rail diesel with petrol! What can I do now?”

Don’t laugh — a diesel filled with petrol is more common than you think, especially if you’re refuelling at an unfamiliar outlet and you’re in a hurry. (Admittedly, I’ve done it myself!) Common rail diesel engines (CRDs) have incredibly fine tolerances, operate at extremely high pressure, and are intolerant of...