Is Compression Lock on a PUMA an Issue?

[4xsama]

Hi All,

I went to start my Defer the other day and it didn't crank over. I tried again and it started no problem. I think its done this before but was ages ago and isn't a regular occurence.

The first attempt sounded a bit like a compression lockup. The starter engaged and tried to crank but only got a part of one crank out. It was first thing in the morning/first start for the day so the engine was stone cold.

Do PUMS engines suffer from compression lock?

[200defenda]

If the battery and starter motor are both in good condition, i would be suspecting a Loose wire or terminal. If you had a hydraulic lockup via fluids leaking into the cylinders you would know as it would smoke heavily after start up.

[justinc]

A common problem if there is a glitch with immobiliser to engine ECU connectivity. Often a lock and unlock via the fob will sort it out. Usually. Sometimes...