I'm (still) having trouble with starting my car requiring lots of turnover (10-20 secs) at times. It's been suggested that this may be due to a sticking tappet which keeps the valve slightly open at rest thus given no compression. If so, could this just be a single valve? Would it not at least attempt to fire on the remaining 4 cylinders?
What's solution - is there any additive I could use? Very thin synthetic oil? Head strip down?....
Any advice gratefully received!
Graham