1972 Merc 280se 3.5 V8 engine running problems
Discussion
This V8 engine type was also fitted into later 350's .
The problem I've got with it is rough running that started suddenly a couple of months ago . If you slowly depress the throttle it will accelerate smoothly to full revs but if you floor the throttle quickly it thumps and bangs and decelerates to idle speed ( but doesn't cut out ).
I've checked the timing , replaced the points and condenser , and checked the fuel flow to the fuel rail - it's getting loads .
I've also cleaned the 4 breaker points ( that sit under the base plate in the distributor ) that control the electronic fuel injection - 1 set of points runs 2 cylinders each . They were slightly oiled up but it hasn't cleared the acceleration problem .
Has anyone got any ideas please because I'm all out !
The problem I've got with it is rough running that started suddenly a couple of months ago . If you slowly depress the throttle it will accelerate smoothly to full revs but if you floor the throttle quickly it thumps and bangs and decelerates to idle speed ( but doesn't cut out ).
I've checked the timing , replaced the points and condenser , and checked the fuel flow to the fuel rail - it's getting loads .
I've also cleaned the 4 breaker points ( that sit under the base plate in the distributor ) that control the electronic fuel injection - 1 set of points runs 2 cylinders each . They were slightly oiled up but it hasn't cleared the acceleration problem .
Has anyone got any ideas please because I'm all out !
Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff