

| Subject: | Re: Fuel pump noise? Fuel filters. |
| From: | Don Hanson |
| Date: | Mon, 22 Jul 2013 20:39:48 -0700 |
Ooops, typo....a Four hundred twenty lb motorcycle, not 320.. On Mon, Jul 22, 2013 at 8:37 PM, Don Hanson <dhanson928@gmail.com> wrote: > I don't think you are right, Dennis. The motorcycle that filter was > used on has more HP than the Vanagons or my inline Jetta motor. The inlet > and outlet are the same size as the post-pump filterr.. The gas flow has > to be similar between a 900cc high-performance motorbike at 32O lbs and a > ~2000cc vehicle weighing 4000lbs. > > The larger diameter of the moto-filter cannister leads me to guess there > is more surface area in the filter element, hence less restriction than > those tiny little square filters some Vanagons have, especially as it does > it's job and collects crud on the element....... It must have about 10 > times the internal volume, compared to the Vanagon one...again guessing on > the math. > > Whatever...it will likely filter out dead mice from the tank, or rust or > crap from Mexican Pemex pumps or other possible 'pump busters'...Seems to > work for me, and I have had plenty of experience with poor gasoline, > filters, motorbikes, etc.. > > When I change out this one, coming due this fall, I will probably just > find one in one of the racers supply catalogs or online.. Fuel pumps are > pricey...filters are pretty cheap.. I don't like the plastic ones, being > exposed to road debris as they are on the Vanagon... > > I agree on checking the pump mounting..make sure there is good > isolation from the frame, etc. And....remember, sound travels very well > indeed through liquid...so isolating ( with some sort of rubber mounting ) > your post-pump filter might help with the noisy FP also... > > > On Mon, Jul 22, 2013 at 5:57 PM, Dennis Haynes <d23haynes57@hotmail.com>wrote: > >> The size of a filter on the outside has little influence on what can be on >> the inside. The original pre-pump filter has a lot of filter material >> crammed in there designed to handle the flow (liters per minute) that the >> fuel pump can move. I doubt a filter designed for the carburetor on that >> motor cycle is designed to handle the fuel in its lifetime that the >> Vanagon >> pump moves in an hour. As it loads up and starts to restrict flow you >> won't >> even know because the element will rip away in there somewhere so the fuel >> will just continue to flow. >> >> Dennis >> >> >> -----Original Message----- >> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf >> Of >> Don Hanson >> Sent: Monday, July 22, 2013 12:48 PM >> To: vanagon@GERRY.VANAGON.COM >> Subject: Re: Fuel pump noise? >> >> On the subject of fuel pumps, filters, noisy operation, etc. >> >> Here's a handy hint. Golf Tees are good fuel line stoppers for when >> you >> must work around the fuel system. I keep some in my tool box and just >> push >> one into any line that I have to temporarily disconnect. >> >> I installed a large pre-pump filter into my system. It came from a >> Triumph motorcycle and is actually larger than the standard VW post pump >> filter.. I see no reason to chance getting dirt from the tank or various >> filling stations into my fuel pump, so the pre-pump filter makes sense to >> me...thought the one VW uses on some models, that seems too small. Find >> and >> install a larger one, keep your FP happy.. Can't hurt. >> >> >> On Mon, Jul 22, 2013 at 9:07 AM, neil n <musomuso@gmail.com> wrote: >> >> > Was the noise always there or did it recently appear? >> > >> > I've been living with an intermittent pump noise for some time now. >> > Pump, tank, etc. were new at time of tank install and engine swap, and >> > the noise was apparent soon after that. Deleting the pre pump filter >> > and installing a post pump filter did not seem to change this. I'm >> > running the older style tank with smaller outlet. >> > >> > Not saying your pump won't fail, but if it were me, I'd just keep an >> > ear on it and note if there's an abrupt change in noise levels. >> > >> > Neil. >> > >> > On Mon, Jul 22, 2013 at 4:08 AM, Bob Anderson >> > <ROBERTANDERSON294@comcast.net> wrote: >> > >> > > Hello All, >> > > Question regarding my fuel pump. When engine is running, I'm >> > > getting a >> > continuous noise from the pump, like a noisy dremel. >> > > When I turn on the key, I hear the normal pump sound, but then once >> > > I >> > start the engine the noisy dremel sound starts and is continuous. >> > > Time for a new pump? >> > > Thanks, >> > > Bob Anderson >> > > '86 Vanagon >> > > Wilmington, MA >> > >> > >> > >> > -- >> > Neil n >> > >> > Blog: tubaneil.blogspot.ca >> > >> > '88 Westy http://tinyurl.com/c8rlw6p >> > >> > '81 VanaJetta 2.0 "Jaco" http://tubaneil.googlepages.com/ >> > >> > Vanagon VAG Gas inline-VR Engine Swap Group: >> > >> > http://tinyurl.com/d7gd5ej >> > >> > >
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