Start and stall

[wilco]

We have a cucv pickup in our fire department. When we got it I changed the oil and filter as well as the fuel filter. We have driven it about 500 miles , 1 + year of service.

It has developed a problem when you cold start it. It will start and then stall a few second later, it is then hard to start and lacks power until it warms up.

I will change the fuel filter and bleed the system, and ideas if that is not the fix?

 

[doghead]

Look for a fuel leak at the fuel filter base. They are known to crack, allowing it to loose prime.

 

[1986Blazerk5]

Look for a fuel leak at the fuel filter base. They are known to crack, allowing it to loose prime.

I agree with that, there has been a lot of problems with this, mine was doing the same thing. But instead of the oem design I went with a spin on fuel filter. In my opinion its much better than the factory design

 

[91W350]

Look at those flexible rubber lines as well. They ran one from the filter block all the way to the fuel injection pump. All it takes is a crack big enough to draw air through. The fuel will siphon back, drawing air. It may be months or years before it gets bad enough to leak. I have been able to change that line by reaching under the intake from the driver's side and running a 1/4" drive extension between the intake runners. If you cannot get on the clamp, it is intake removal time. That is simple enough, I just did not want to buy the gaskets.

Sounds like your injection or distributor pump is still sealed as it is holding its prime. I have also seen the lift pump cause this problem, it is on the passenger's side of the block between the engine mount and lower radiator hose. It also has a rubber hose that runs from the bottom side of that pump to a line at the fuel filter. A leak down there will do the same thing. That lower line is a chore to replace as is the lift pump. I think a lot of guys just go electric instead. Glen