My 1998 Isuzu Wizard 4JX1 started running rough when getting low on fuel. Put some more fuel in it , seemed to get better then problem came back. Feeling like fuel starvation, so pulled the fuel filter and found a nice little puddle of rusty water when it was emptied. Put on a new Ryco filter and pumped some fuel with the primer through then dropped the filter again.... nice clean fuel. Dodgy servo tanks I thought..... problem solved! Put filter back, pumped and pumped on primer, tried starting it..... no joy. Darn. Pumped primer again, tried starting again.... no joy..... just kept trying till the battery went flat! Read lots of stuff on the forum and others about starting problems. Figured I just wasn't pumping the primer long enough and hadn't prefilled the filter. Pulled off the filter denting it with filter wrench, so threw on another Ryco, this time pre filled with diesel, pumped and pumped and pumped and got it to the "hiccup" stage. Time for desperate measures. Sprayed some CRC "Jump Start" into the air cleaner, and it burst into life! Sweet! Took it for a test drive and only got about 3 km up the road before it cut out! DARN!!! Towed it home. I figured that there must be more rubbish in the fuel tank. Set aside a Sunday afternoon to pull the tank and do another filter. This time I bought a Fleetguard from Heavy Diesel Parts and Service (a customer on my run.... I'm a motorcycle postie for DX Mail... a competitor of NZ Post) The Fleetguard was marked as a part for a Hino truck, was half the price of the Ryco from Repco! The boy and I pulled the second Ryco off.... inside was clean diesel. I knew I now wouldn't sleep till I had checked the fuel tank though. So Off that came and about 30 litres of nice clean looking fuel got dumped. Inside of the tank looked sweet as also. The rust I saw must have come from the local Shell's tank not mine! Put about 5 litres of fuel in the tank, installed the Fleetguard filter, gave about half the number of pumps I thought it would need, then tried the starter on the off chance. Blow me down.... she ran! Then I remembered that both Ryco filters had had a drop of fuel on the bottom before I removed them. I reckon that the flat seal on them wasn't sealing enough for the system to maintain pressure. The Fleetguard filter has a rounded o-ring seal rather than a flat one. Dramas weren't over though. It died 1km up the road when heading to the local BP (not the Shell!!!) for more fuel. This time a twenty litre jerry can of diesel and about 15 pumps of the primer got us underway. I guess that 4 litres or so at the bottom of the tank does't get picked up. No drip on the bottom of the new filter. Fingers crossed it's all fixed.
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