[Mike Lewis]

I was driving the beast to school today trying to get some air out of the lines (cooler weather moved in... yup, sucked air).

I believe most of the air was out of the lines by the time I hit the highway (had already driven the truck once this morning) but was having what felt like small, repeated, losses of power as I was heading down the road at about 70 mph.

The tach was staying steady and she was on cruise.

Is it possible windy conditions would have caused this sensation, or do I need to be looking at something mechanical?


Thank you,

Mike

 

[OkieGringo]

Mikey, Mikey, Mikey...have you installed an electric fuel pump yet? If not, just do it. /ubbthreads/images/graemlins/shrug.gif Baja

 

[soulpatchfr]

fuel pump notwithstanding, i know wind gusts can feel like the hand of God on Big Black...
i frequently drive over large bodies of water (many bridges around these parts), and if the gusts are coming straight at me, i never hesitate to think something is wrong with the truck. then when i get into the tunnel i sigh in relief when she roars on through.

can't swear the tach was steady during the brief 'stumbles', though. can't say i even looked.

 

[Mike Lewis]

Shhhh! Don't tempt me!

Seriously, the last thing I need is to be underneath my truck working on it! I have a thesis to write!! /ubbthreads/images/graemlins/eek.gif

 

[Mike Lewis]

Yeah, I looked at the tach rather quickly and saw no jump.

These doggone seabreezes in Monterey can KILL (ever bicycled or run against a headwind, uphill, for miles at a time--GRRRRR.) God has a big hand, but I had no idea He was so interested in my truck...

The electric fuel pump idea IS interesting... I just don't have confidence in my mechanical skills and would therefore only do the swap if Baja or someone else knowledgeable in these matters came to Monterey to help. /ubbthreads/images/graemlins/smile.gif

 

[huskyhauler]

see any smoke? sounds like a pump timing issue. usualy when the fall less than 6.5' BTDC, they will do as you describe. kind of a stuter-miss. they always seems to clear up after a few miles if driving, after the chamber have come up to temp. had one in a INT 155 hp 7.3 do this a few months ago. started right after the fast idle-pump advance solenoid kicked off. did fine till it hit 110' and wasnt good again till it had run a few miles. sure enough the pump timing was at 5.5' BTDC. have yet to see it back, but i am sure the pump is going away, as pump timing does not move on its own..

 

[Mike Lewis]

Thank you for the tidbit... I'll keep this in the back of my mind... will hopefully have less wind tomorrow to check this out again...


Mike

 

[beretzs]

Mike, the electric pump is about the easiest thing you can do to the truck. It is two easy wires and splicing your fuel lines into the pump. It is very easy. Might take two hours from start to finish. I hate electric stuff, but even I made mine work. Scotty

 

[Mike Lewis]

Well, I'll get the parts... but you gotta remember... I'm in the Air Force. I have to have a crew chief do my mechanical work.

 

[tim94f250]

Make sure the pump you buy has an inertia switch built in. Tim

 

[jdkline]

Why must it have an inertia switch? If I can do it you can do it Mike, although I still have the hicksville toggle switch setup. Works great though, cheers,
J.D.

 

[Mike Lewis]

Does anyone have the Summit part numbers for the pump and the switch?

Thanks,
Mike

 

[tim94f250]

It needs an inertia switch so if one gets into an accident, the inertia shuts down the fuel pump and no one gets cooked crispy. Go to Summit.com and punch in part # 10-10038 It's an external type of what I'm talking about. I wouldn't drive without one and it's scary to think about all those that do.

 

[Mike Lewis]

Summitracing.com.

No dice on that part number... /ubbthreads/images/graemlins/shrug.gif

 

[tim94f250]

Works for me Mike. http://www.holley.com/HiOctn/ProdLine/Products/FMS/FMSFP/f10-10038.html Try it again.

 

[ColLonewolf]

With small surges, do not forget the A/C compressor clicking on and off (it will come on when on heat or A/C) or the fan clutch coming on and off. Pays to think about the little things that affect our lives before we jump into a hail storm of new parts and labor. Just a little something to think about.