jensen a540 revs dropping and cutting out! PLZ HELP!

[hamilton32]

We've got a 2007 Jensen A540 it starts fine and picks up revs fine when engaged nothing sounds wrong but then after a minute or so the revs drop suddenly and it cuts out.

This happens repeatedly.

It's recently had a service and I can't find any obvious fault's. Does anyone know what it could be?

Help massively appreciated! Thanks

[john p]

Lift pump might be on way out,(mine was similar when it went). Get a compressor and blow back through the fuel lines to the tank as well.

[Stubby]

Had similar on ours . Turns out the battery lead was a bit ropey . I f you got underneath whilst it was running and wiggled it a bout it would cut in and out . . changed them both and it was sorted .  

[Joe d]

has the inline fuel filter been changed ? 

2 hours ago, Stubby said:

Had similar on ours . Turns out the battery lead was a bit ropey . I f you got underneath whilst it was running and wiggled it a bout it would cut in and out . . changed them both and it was sorted .  

 

[Ratman]

Some of our kubota engines suffered similar problems on our powerpacks.
Electrical connections as Stubby suggested,
Pickup pipes in the tank used to corrode on the outward elbow section of the sender units and a pin hole would develop so air would draw in and engine revs would die.
Non return valves fitted in the feed line would get made up with shite, but your in-line filter would tell a few stories for that.
General dirt/sludge build up in tank would plug the pickup pipe up resulting in part fuel starvation.
In-line filter as Joe suggested.
Had lift pumps go tits too as john p suggested.
Occasional weak stop solenoids too, if they got too hot or went faulty they used to burn/melt back end of solenoid and you could see it popping the back end out of housing with three wires going in to it.
I’m assuming they will be of a similar set up.