Hello,..

Been lurking here for years , need a bit of advise please.,

I've recently refitted my dump valve back onto my Series 1 ( purely nostalgic reasons )

I've noticed that sometimes during a high load situation I.e planting foot in 2nd or 3 rd gear the dump valve hisses and the car wont accelerate past 4k revs ..like the clutch is slipping ..would you guys suggest clutch or leaky D.v?

Seems to be intermittent..if i boot it from 1st gear 5 out of 10 times its fine.

( ,..should probably take it off and try it and see what happens..)

many thanks in advance

p.s car is running 190HP , uprated clutch etc.