Fuel Sending Unit Headache - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cst350 · 08-31-2018, 09:57 PM

Just pulled my sending unit (stock tank) after loosing fuel pressure. The filter sock didn't come with it! It separated at the end of the tube and took the metal washer looking thing with it. I can see it so no worries on fishing it out. I am guessing the the Ethanol in my local gas is the culprit???

So heres my question: Since I have an external gas filter (after the pump), can I just put the sender back in without that filter sleeve? I think Im going to be repeating this drill each winter if I just replace the unit. #F_Ethanol

**HO455** · 08-31-2018, 10:19 PM

If you are confident it that you won't ever suck up anything large enough to damage the pumps diaphragm. If not then a new sock or a 100 micron filter before the pump is a good idea.

**VetteVet** · 08-31-2018, 10:26 PM

I'd be afraid it might suck op some little flakes of rust or something foreign that got in the tank and plug the line before the filter.
I got my new sending unit from PartsGeek.com for $34.00 and it is really nice.

https://www.partsgeek.com/catalog/19...l#immersedview

joeydurango · 09-01-2018, 12:13 PM

I'd keep the in-tank filter too...

Do they not allow ethanol-free gas to be sold in Cali? I'm lucky, I guess, because there are three gas stations within minutes of my house that have multiple ethanol-free pumps. I just thought that was the same everywhere. If you can find it, I think it's worth buying.

cst350 · 09-02-2018, 01:16 AM

Since I fished out the filter... I'm thinking good ol JB weld will get me back on the road.

I looked at a website that claims to list all stations that have Ethanol free gas and the closest one is 300 miles away. Seems strange I couldn't get it at an airport or a commercial gas station. There is even a station in my town that sells 104 ($7.00 gal) for the local crotch rocket crowd. Please no advice to move out of Cali, been here for 50+ years and yes it pretty much sucks these days but family first.

joeydurango · 09-02-2018, 08:55 AM

Quote:

Originally Posted by cst350

Please no advice to move out of Cali

You won't get that from me. Lack of ethanol-free fuel would be a silly reason to move from your home! And California is a beautiful state, I've spent quite a bit of time there.

**HO455** · 09-02-2018, 12:38 PM

Quote:

Originally Posted by cst350

Since I fished out the filter... I'm thinking good ol JB weld will get me back on the road.

I looked at a website that claims to list all stations that have Ethanol free gas and the closest one is 300 miles away. Seems strange I couldn't get it at an airport or a commercial gas station. There is even a station in my town that sells 104 ($7.00 gal) for the local crotch rocket crowd. Please no advice to move out of Cali, been here for 50+ years and yes it pretty much sucks these days but family first.

Just be aware that gasoline attacks JB Weld and it will fail at some point.

4carbcorvair · 09-02-2018, 11:20 AM

Quote:

Originally Posted by joeydurango

I'm lucky, I guess, because there are three gas stations within minutes of my house that have multiple ethanol-free pumps. I just thought that was the same everywhere. If you can find it, I think it's worth buying.

I'm in Maine, closest gas station with non-ethanol is in NH.

08-31-2018, 09:57 PM	#1
cst350 Registered User Join Date: Dec 2003 Location: nor cal Posts: 219	Fuel Sending Unit Headache Just pulled my sending unit (stock tank) after loosing fuel pressure. The filter sock didn't come with it! It separated at the end of the tube and took the metal washer looking thing with it. I can see it so no worries on fishing it out. I am guessing the the Ethanol in my local gas is the culprit??? So heres my question: Since I have an external gas filter (after the pump), can I just put the sender back in without that filter sleeve? I think Im going to be repeating this drill each winter if I just replace the unit. #F_Ethanol

08-31-2018, 10:19 PM	#2
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,409	Re: Fuel Sending Unit Headache If you are confident it that you won't ever suck up anything large enough to damage the pumps diaphragm. If not then a new sock or a 100 micron filter before the pump is a good idea. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

08-31-2018, 10:26 PM	#3
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,719	Re: Fuel Sending Unit Headache I'd be afraid it might suck op some little flakes of rust or something foreign that got in the tank and plug the line before the filter. I got my new sending unit from PartsGeek.com for $34.00 and it is really nice. https://www.partsgeek.com/catalog/19...l#immersedview __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

09-01-2018, 12:13 PM	#4
joeydurango Registered User Join Date: Dec 2013 Location: Durango, CO Posts: 827	Re: Fuel Sending Unit Headache I'd keep the in-tank filter too... Do they not allow ethanol-free gas to be sold in Cali? I'm lucky, I guess, because there are three gas stations within minutes of my house that have multiple ethanol-free pumps. I just thought that was the same everywhere. If you can find it, I think it's worth buying. __________________ 1972 K10 Cheyenne Super \| LWB, fleetside \| 350/350/205 \| KEEPER 1971 K10 Cheyenne \| SWB, fleetside \| LS Swap 5.3/4L60 \| SOLD 1976 Trans Am \| 400/4-spd \| SOLD 1976 Trans Am \| 455/4-spd \| TOTALED

09-02-2018, 01:16 AM	#5
cst350 Registered User Join Date: Dec 2003 Location: nor cal Posts: 219	Re: Fuel Sending Unit Headache Since I fished out the filter... I'm thinking good ol JB weld will get me back on the road. I looked at a website that claims to list all stations that have Ethanol free gas and the closest one is 300 miles away. Seems strange I couldn't get it at an airport or a commercial gas station. There is even a station in my town that sells 104 ($7.00 gal) for the local crotch rocket crowd. Please no advice to move out of Cali, been here for 50+ years and yes it pretty much sucks these days but family first.



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