by narrawa » Fri Sep 10, 2010 1:34 am
I use an electric fuel pump on my 97 rodeo 2.8td.
It helps with the problem of running out of fuel on first start up, where as the seal in the IP is contracted during the cold weather.
Its a 7psi electric pump, none rotary type. ( repco $90 )( mini minor type )
What it does is prime the fuel system and stop that problem of running out of juice till the IP seal has expended and can suck fuel on its own. A band-aid fix for an IP that needs a new seal or overhaul.
What I just found out by using this idea is that it causes the IP to run advanced. This I was told by an IP specialist just recently who was present as the engine was being refitted.
After seeing the upper conrod bearings from my recent rebuild, one starts to wounder, and even the re-conditioner was scratching his head, what caused the upper bearings to ware and not the bottom bearings.?
Over advanced timing and the use of the electric fuel pump.
I still use it, but now have installed a switch to turn it off after OP temp is reached and let the pump suck.
Over advanced timing was caused by the harmonic balance-er spinning on the inner rubber damper, and having it timed by someone not on the ball.
My engine runs heaps better at 100klm then it did before the rebuild. ( silent )
It was timed by a dial gauge on head ( piston height ) and via the IP pump which showed the balancer being out of whack.
And I thought my motor was running quite smooth, stated first pop every time, and never missed a beat, bit noisy at 100klm but was told that was normal.
) on the fuel pump for on a manual 2.8 4JB1-T please?
