PBO reader Gunter Bock wants to know what’s causing his smoking boat engine. Our expert has this advice…
A smoking engine might be as a result of a clogged exhaust elbow. Photo: Kay Roxby/Alamy Daewoo Excavator Radiator
Gunter Bock from Norway writes: “I read in PBO’s November 2021 issue about exhaust elbow problems. You recommended replacing the reader’s damaged iron elbow with a new one in stainless steel.
“I’m wondering whether there are any galvanic problems in combining stainless steel with an iron motor block? I’m running a Volvo Penta D1-30F.
PBO engine expert Stu Davies replies: “There are quite a few suppliers of aftermarket stainless steel exhaust elbows out there. Stainless to cast iron should not be an issue.
Very cheap exhausts bought online and fitted to marine diesel heaters risk fires and fatal fumes, warns a marine surveyor…
Simon Mitchell from Essex writes: “I have a Volvo Penta 2003T with 950 hours running time. It starts perfectly and…
“I actuall