Although pump timing is a prime candidate, there are other things that can bring on the engine warning light and some of these are easily checked. Air leaks from perished hoses on the induction side can upset things. It may be worth checking all the little hoses around the EGR valve and MAF.
As an aside, starting ability may suffer if the pump timing is off. When it's right, these engines usually start within a turn or two in the British climate.
Doubtless, others will have suggestions too. As usual, do the easy and cheap stuff first.
Martin
|