rebuild your low pressure mechanical pulse pumps or buy new?

[pancake]

is it worth it to even rebuild these pumps, or just buy new ones. I've looked at the diagram , how do you test them? what are the symptoms of failure?

thanks 2001 HPDI z150tlrz

 

[rodbolt]

Re: rebuild your low pressure mechanical pulse pumps or buy new?

either the diaphram tears and leaks fuel into the crankcase or it stretches causing low output pressure.
easy to rebuild them or for abot 20 dollars more you can replace them.
I dont rebuild many cause at 85 dollars an hour my customer would have a new rebuilt pump.
its all about time vs dollars.