7.3 HPOP Surge

[rayrayray01]

Well my dad bought the truck with 25,000 on it and gave it to me with 325,000 on it. It was used mainly as a construction trailer pulling highway truck. Its been all over the state of TX driving insane distances. He never put injectors in the truck the hole time he had it. He did have the trans rebuild and beefed up for heavy pulling roughly around 100,000 and replaced the HPOP somewhere along the way. We moved up to OK and it was given to me and thats when I started working on it.

How the injectors have lasted this long is beyond me, maybe never having a chip on the truck helped but who knows. They are do for retirement but I don't quite have the money put back to by Swamps injectors for her yet.

[rayrayray01]

Well I figured out what was causing my issue. Took the truck in today and got the shop to hook it up to the scan tool and the IPR was reading 7% at idle and 40% at full throttle. The HPOP didn't loose any pressure through the entire test run according the scan tool nor did the IPR reading change surge any. I drove and the teck read off the scan tool. So he started looking at the ICP reading every time my HPOP gauge would start surging the ICP voltage would jump all over the place. It didn't do it at full throttle or being easy on the throttle but at 50-75% roughly it would surge every where.

So I've got to get a new ICP.

[wring09]

Your definitely still going to need injectors, Id do hpop at same time. According to anyone and everyone I know including myself that does injectors they are recomment between 150,000 to 175,000 mile intervals anything after that is asking for an unevenly running motor causing premature wear on anything base engine.

[tbolt]

clean fuel, clean oil will give them a long life. I put some reman Swamps in mine @120K and no more than I drive mine I do not expect to ever do them again unless there is a failure. I only put 5/6K a year on it.

[rayrayray01]

Well I got the new ICP installed Monday and it seems to have fixed every single problem that I described up above. For the past two days the truck has hit off with no warm ups nor was it missing any power when I first started it. But we are also in 100+ degree temps now so that could have a lot to play in it. I'll continue to keep updates going.

[7.3]

my buddy had 400k on a completely factory motor. besides wicked wheel, k&n intake and cut the muffler and cat out. ts chip and gets beat on pretty good. never changed injectors hpop or anything. just regular maintenance. some trucks are just lucky lol