"trickle" sound after driving, fuel re-entering the tank

gintaras · 02-27-2010, 06:09 PM

I have had a lot of threads recently, but I am new to the XJ, I just got one about 3 weeks ago and I am a fast learner (already did a 3" lift), so I am trying to learn as much as possible as well as identify some common issues.

What I have is a trickling sound after i drive it and park it and turn it off. It has always done this (well, for the past 3 weeks anyway), and I didn't know what it was, at first I thought it was coolant draining back. Today I was underneath, torquing all my suspension bolts and I heard it coming from the fuel tank, it sounded like gas was running back into the tank. Is this normal? or do i have an evap problem? I do have a bit of a rough idle and I was wondering if this is a contributor to my rough idle.

98 JeepJeep · 02-27-2010, 06:36 PM

that probally mean you have a bad check valve...which is supose to hold the fuel in the line for a quick RE-Start.

TallyPatriot · 02-27-2010, 07:14 PM

Does your Jeep not want to start on the first key turn after sitting for a few hours? Mine has been doing that lately, so I am planning a fuel pump ***embly swap in the near future. Now I've just been lazy and leaving the key in ON position for a few seconds before I try to crank it.

In case you didn't know the brillant engineers at Jeep put the check valve in as a part of the fuel pump module.

chadrenner69 · 02-27-2010, 07:22 PM

i have the same trickle noise everytime i turn mine off too and have no idea
i always thought it was oil trickling back to the botom of the oil pan

98 JeepJeep · 02-27-2010, 07:23 PM

jeep didnt design the pump...it was probally Bosch.........also you can install a INLINE Check Valve to solve this issue.

gintaras · 02-27-2010, 07:41 PM

it start fine all the time.. where would I install a check valve?

fishtaconc · 02-27-2010, 08:47 PM

you can put it anywhere between the tank and fuel rail.

02-27-2010, 06:36 PM	#2
98 JeepJeep CF Veteran Garage is empty, add now Join Date: Oct 2008 Location: Stafford,VA Posts: 2,519 My Photos 1998 Cherokee Engine: 4.0 Transmission: Auto	that probally mean you have a bad check valve...which is supose to hold the fuel in the line for a quick RE-Start. __________________ Polished Bullet key chains LeadRings.com 98 Jeep Cherokee Cl***ic 4x4 164K 7120 Head,63MM TB,00 XJ Intake Manifold,Header,19lb Explorer Injectors,RC 6.5 LA,35'S.

02-27-2010, 07:14 PM	#3
TallyPatriot Newbie Garage is empty, add now Join Date: Feb 2010 Location: Tallahassee, FL Posts: 19 My Photos 2000 Cherokee Engine: 4.0 Transmission: AW4 Transfer Case: NP231 Front Axle: D30 Rear Axle: 8.25 Tires: 235/75/15	Does your Jeep not want to start on the first key turn after sitting for a few hours? Mine has been doing that lately, so I am planning a fuel pump ***embly swap in the near future. Now I've just been lazy and leaving the key in ON position for a few seconds before I try to crank it. In case you didn't know the brillant engineers at Jeep put the check valve in as a part of the fuel pump module. __________________ 2000 Patriot Blue XJ - Rusty's 3" Full Leaf; Logan's Metal Fab Bumper

02-27-2010, 07:23 PM	#5
98 JeepJeep CF Veteran Garage is empty, add now Join Date: Oct 2008 Location: Stafford,VA Posts: 2,519 My Photos 1998 Cherokee Engine: 4.0 Transmission: Auto	jeep didnt design the pump...it was probally Bosch.........also you can install a INLINE Check Valve to solve this issue. __________________ Polished Bullet key chains LeadRings.com 98 Jeep Cherokee Cl***ic 4x4 164K 7120 Head,63MM TB,00 XJ Intake Manifold,Header,19lb Explorer Injectors,RC 6.5 LA,35'S.

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02-27-2010, 07:22 PM	#4
chadrenner69 Junior Member Garage is empty, add now Join Date: Nov 2009 Posts: 69 My Photos Cherokee	i have the same trickle noise everytime i turn mine off too and have no idea i always thought it was oil trickling back to the botom of the oil pan

02-27-2010, 07:41 PM	#6
gintaras Member Garage is empty, add now Join Date: Feb 2010 Location: Schererville, IN Posts: 217 My Photos 1997 Cherokee Engine: 4.0 Transmission: slushbox Tires: BFG KO 235/75 R15	it start fine all the time.. where would I install a check valve?

02-27-2010, 08:47 PM	#7
fishtaconc CF Veteran Garage is empty, add now Join Date: Mar 2009 Location: Watha,NC Posts: 1,208 My Photos Jeepless at the moment	you can put it anywhere between the tank and fuel rail.

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