Fuel system failureS?
Thread Starter
TECH Resident
Joined: Aug 2008
Posts: 910
Likes: 0
From: Dubai
Fuel system failureS? Simple question, yet might be too broad.
How frequent do fuel systems fail? Or even better, how frequent to fuel pumps fail.
Im asking this question, because I would like to assess the risks of running dual pumps. If one goes one a lean mixture at high boost would destroy the engine in an instant.
Im guessing one BIG pump is a much better approach, having a vehicle that does not run as an indication of a pump failure is much better than ending up with a blown-up engine.
Ideas?
How frequent do fuel systems fail? Or even better, how frequent to fuel pumps fail.
Im asking this question, because I would like to assess the risks of running dual pumps. If one goes one a lean mixture at high boost would destroy the engine in an instant.
Im guessing one BIG pump is a much better approach, having a vehicle that does not run as an indication of a pump failure is much better than ending up with a blown-up engine.
Ideas?
Joined: Dec 2004
Posts: 1,294
Likes: 0
From: Dallas (Richardson), TX, USA
Fuel pumps don't always fail outright. In that case, the second pump in a dual setup would be nice insurance. If a single pump started failing and was not keeping pressure up, your motor would be just as fubar'd.
I've built a few hundred double pump kits per year over the past few years & have yet to see a pump failure. A lot of it has to do with how you build them & the quality of parts involved.
A big single can drop in output as well giving the same lean results.
There is no substitute for watching your fuel pressure gauge.
A big single can drop in output as well giving the same lean results.
There is no substitute for watching your fuel pressure gauge.
