I can tell you now, some people will vigorously defend the in-line pump, and some will even say “My in-tank pump has been dead for years and my truck runs just fine!”
The reality of the situation is a deuce can run for a long time without a lift pump, months, years, who knows just how long, but ultimately with no lift pump or using the in-line sucking against gravity to push fuel forward you’re slowly killing your injection pump by stressing the booster pump and hydraulic head causing excessive heat and wear. The injection pump itself relies on excess fuel to circulate back to the tank assisting in cooling itself.
Something else to consider, power will be down especially at higher rpm, I’ve experienced it in 3 trucks now first hand. A truck that’s already slow will become even slower. Food for thought, the design of the factory in-tank pump allows for robust reliable operation even when fed waste oil, dirty rust-laden fuel, gasoline and alternatives without much fuss, but an in-line pump has tight tolerances with no in-line filter. If your truck has rust in the tank like 99% of ours do, that pump will die from trash ingestion eventually.
Anyways, you can contact olympia direct and source a brand new, not NOS pump for around $350. I’m lazy, I’m also really cheap, but I hate spending money a 2nd time because I took a shortcut. Just my .02 with some experience to boot
Sent from my iPhone using Tapatalk
