147 JTD 16V Flatspot
For once I'm one of the needing! It appears that my 147 JTD 16V has a little flatspot. It picks up well from 1,500 revs and pulls hard from 2k but at 2,250 the power drops, the speedo drops off and by the time it gets to 2,500 revs it picks up hard again. It's almost like a clutch slipping but it isn't as the revs are staying constant.
It's only really noticable in 4th, 5th and 6th gears where the revs don't shoot up so quickly. You notice it most when you sit behind someone on the motorway at 70 and put your toe down and you see the speedo increase and then literally stall (the speedo that is, not the engine) at 75 for a few seconds and then pick up again.
I'm pretty certain its not the usual EGR valve issue as theres zero black soot coming out (and to be honest it hasn't blown any soot out for about 30k miles now regardless of how you drive it).
The car has done 101k miles now and has been serviced on time all the time since I bought it new in 2003.
Last edited by alfa_147_jtd_16v; 24-11-10 at 06:12.