hi all.
I have a 1989 190e 2.5 16v with twin 48 weber dcoe's and megajolt.
Got it all up and running last year and had it set up on a rolling road. All good. Very smooth and made good power. Drove it around 2000 miles last year no problems at all.
Took the car off the road last year for some fiddling and engine bay paint. Kept the engine pretty much un-touched and was hoping it would drop back in the hole and work perfectly again. Fraid not! Starts and idles ok but any load and it bogs down massively - its almost impossible to get the engine revs to climb under load.
The carbs were taken apart, cleaned and re-assembled. I have set the float height and idle mixture. Also balanced them.
The only change I have made to the carb configuration is the installation of a small heat-proof spacer between the head and inlet manifold - approx 3mm deep - this couldnt be messing things up?
Also - when I took the carbs off I realised the ports from the inlet manifold (after-market) didn't match the inlet ports in the head - the manifold ports were around 2mm smaller so I opened them all out to match the ports on the head. Could this additional airflow be enough to throw the settings on the carbs out by so much? If so, would I be looking at an increase in main jet size?
Any help or pointers appreciated.
Thanks.
I have a 1989 190e 2.5 16v with twin 48 weber dcoe's and megajolt.
Got it all up and running last year and had it set up on a rolling road. All good. Very smooth and made good power. Drove it around 2000 miles last year no problems at all.
Took the car off the road last year for some fiddling and engine bay paint. Kept the engine pretty much un-touched and was hoping it would drop back in the hole and work perfectly again. Fraid not! Starts and idles ok but any load and it bogs down massively - its almost impossible to get the engine revs to climb under load.
The carbs were taken apart, cleaned and re-assembled. I have set the float height and idle mixture. Also balanced them.
The only change I have made to the carb configuration is the installation of a small heat-proof spacer between the head and inlet manifold - approx 3mm deep - this couldnt be messing things up?
Also - when I took the carbs off I realised the ports from the inlet manifold (after-market) didn't match the inlet ports in the head - the manifold ports were around 2mm smaller so I opened them all out to match the ports on the head. Could this additional airflow be enough to throw the settings on the carbs out by so much? If so, would I be looking at an increase in main jet size?
Any help or pointers appreciated.
Thanks.
