Starting issue XC70 2.4t 2001

[b4nditas]

So this is what I have tried, I have cleaned and replaced MAF sensor, I have checked camshaft, crankshaft, sensors. Crankshaft solenoid. Car is always starting hard, sometimes it takes a few seconds, and sometimes it takes 10. After these changes car is going much faster, you can even hear turbo whistle. On the last gear at 3000 rpm it seems like the car is being pulled back.
When starting motor, you can tell by sound that the spark is given not at he right moment sometimes.

[xHeart]

How are spark plugs and ignition coils. Are these original?

[sergio]

.

If the problem is sporadic it could be that the wires need to be checked.

My engine would sort of cough with no reason and very sporadically, and come to a stop.
After a long while and disregarding [professional] suggestions of replacing the car part by part; from AC compressor to MAF to MAP and God knows what, I just cleaned the wires coming out of ECU.
These contacts were covered with oil, and the cleaning did the job.

.

[xHeart]

Not for your exact car, but good enough to help you diagnose...
https://www.youtube.com/playlist?list=P ... rPjBGZinUs

[goldmandan]

Maybe someone changed timing belt and its a few teeth off?as for the sometimes starting and hard starting these engines have problems with the crank sensor that is located on top of the transmission casing to the left of the air box check the connector to the crank sensor as I have found some where the wires are loose in the connector

[Randyv70xc]

I found that the seal on my oil fill cap was leaking.The oil drained into the holes for 3 of the spark plugs, causing it not to fire them correctly.Found this while changing the plugs just as a guess for fixing the problem.