annoying inconsequential matter

May 11, 2004 7 Replies

Anyone wanna guess why, if I park uphill in the driveway, my jeep needs 5 or 6 cranks to start, but if parked downhill, the normal 1st crank starts it.



Like I said, it is nothing more than an annoyance. It does sit for a day or two at a time no matter how I park it. I can park it uphill and start it a couple of hours later and it fires right away.


Just a guess but maybe it has something to do with the time it takes for the fuel pump to build enough pressure to push fuel uphill, whereas downhill gravity will aid in feeding the fuel to the engine? If it is parked uphill for only a couple of hours there wouldn't be enough time for the pressure to bleed off. Maybe there is a small internal leak in your system or maybe that is normal for the Jeep fuel system. I haven't noticed it in mine and I park on a very slight hill at home.

---------------------------------------------------- Del Rawlins- del@_kills_spammers_rawlinsbrothers.org Remove _kills_spammers_ to reply via email. Unofficial Bearhawk FAQ website:

formatting link

You gas filter isn't lined up right would be my guess.

The filter has two outlets. The center outlet goes to the carb and the top outlet goes to the return line.

If the return line isn't at the top, gas will syphon back to the tank when it sits.

Your return line is likely level with the center outlet so when it gets on an angle, it syphons.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

Fennidh wrote:

It could also be the check valve at the electric fuel pump, or the presure regulator. Or, if it's an MB, it could have cosmoline in the needle valve.

YF 1bbl, for now.....

driveway, my

downhill,

does

I

and

time it takes for

uphill, whereas

engine? If it is

be enough time

internal leak in

system. I haven't

home.

You know what Mike, I never thought of the relation between the two outlets when in that position. I am going to have to monkey with the angle, and see what I get. The symptoms are more like the carb siphoning, but I never thought about it going THAT direction.

Thanks all,

Still taking ideas,

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required