Engine/Transmission (1998.5 - 2002) Fuel Pressure Guage

[FFL8N]

OK, I have been pulling my new trailer for just over 500 miles. It is about 6,000 lbs. I have a comp and 275. I had been running the comp on level 3-3 the whole way. ( I still have the stock clutch. ) On the trip, I never ran out of pedal. I always had to back out of the throttle before my EGT's got too high. Towards the end of the trip, on a couple of occasions, my EGT's would max out at about 1200 and I would start to slow down. I don't remember what my boost was, put probably in the 25-28 range. To me, this means I wasn't getting enough fuel or at least as much as I once was. I put the comp to level 5-5 and the truck would pull again and I would have to watch the EGT's. The Temp. that day was about 105-110. Did I loose my priming pump, or did I just max out the comp on level 3? If I just maxed it out, why before would I always have pedal left when I had to back out because of high EGT's? I was traveling on I-15 in southern Utah between Salt Lake and Las Vegas Nevada. ( Yes, there are some big hills!)



I am looking into installing a fuel pressure guage and have ordered the banjo fittings from Geno's. I also got the one with the fitting for a guage. What guage would you guys recomend and how do I go about putting it in? I now have a SPA EGT and Boost combo guage and still have another pod for another guage. I have never done anything like this, so all the help you could give would be appreciated.



David

 

[Gary - K7GLD]

THEORETICALLY - *I* wouldn't think merely setting the Comp higher would in any way overcome the LP's ability to supply fuel - it either WILL or it won't...



Doesn't the Comp also provide a de-fueling function as part of it's setup? If so, that may be what happened - a combination of temp, etc. , might have caused it to max out - until you manually increased its power level...

 

[Snow man]

it sounds liek you were in the 2700RPM range,this is where the comp defuels on all 5 levels. If that is the rev range you were in,its normal. If you were at 2500 or below,id be concerned. either way,id check the FP,since your running the comp,you need to have a strong lift pump.

 

[RJOL]

Originally posted by FF1607

What guage would you guys recomend and how do I go about putting it in?

David

If you already have SPA gauges, you might want to match it to them, but I've had my Westach gauge, from Geno's, installed for about a year and it works great. Installation instructions are good too.

 

[FFL8N]

My tach. was only about 2000 rpm.