[DMCForum] Rumbly rough running
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[DMCForum] Rumbly rough running



Hi list,

Long time since I last posted but I wonder if anyone on the list can 
help.

My DMC has been running badly for some time now, not a constant 
misfire but the engine sounds quite "rumbly" like a huge V8 rather 
than a smooth V6, it also lacks power and stammers when pulling away.

I have changed the following -

CPR, Fuel Distributor, Dizzy + Cap + Rotor, all injectors, fuel 
lines, fuel pump, coil, coil lead, ballast resistors, spark plugs 
(12 months ago). Freq valve etc... 

Also has very good and even compression on all cylinders

Any ideas?

When I removed the plugs, held them on the head and flogged the 
engine over the sparks were not as impressive as I would have 
expected, but they did spark. I have also tested the fuel supply 
pressures and they appear to be normal.

Could it just be way out of tune? I checked the timing, which was 
spot on.

Any suggestions of where to start looking would be helpful.

James RG
Vin# 5462




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