850 Won't start... Has good spark, help please.

[jblackburn]

Glad you got it going

[cn90]

I used to live in the cold winter of Montreal Canada.

When weather is too cold (minus 30 deg C!), after a few tries of no-start, fuel is dumped into the combustion chamber and basically floods the spark plugs.
So inside the combustion chamber: no spark!
Repated cranking makes the problem worse.

The solution is as jablackburn mentioned: remove sp plugs and let it air out.
And always make sure the battery is fully charged!
A weak battery will cause flooding!

[hatemy850]

I had the same issue and messed with it for a couple of weeks, completely stumped. Spark was good, cam sensor working, fuel pressure 58lbs, plugs, cap, and roter all in good shape. After reading this post, I did the compression test and saw that I only had 70 lbs. So, I tried the oil in the cylinders. The car fired immediately.

I've gotten really good at finding the best price on parts, but this issue goes down in the history books as my first FREE repair. I can only imagine what the dealer would have replaced.

So, I am left incredibly grateful MVS. Question: Will I encounter this on a regular basis? Or, is this an infrequent occurrence?

[Ozark Lee]

Question: Will I encounter this on a regular basis? Or, is this an infrequent occurrence?

Of the four in my fleet it has happened to two of them, just once each, over the last 4 years or so. Once I figured out not to start any of them and then move them a couple of feet and shut it off again it hasn't happened since.

The short answer to your question is that you may encounter it again but it is infrequent and you can largely control it.

...Lee