jaapv
Posts: 4582
Joined: Mon Dec 16, 2013 1:18 pm
Location: Netherlands

Re: Fuel filter change

Wed Jun 10, 2020 3:29 pm

AFAIK the glass bowl on the fuel pump was all the filter there was. At least, it is on my TR4. Reason that little plastic filters were available to fit in the fuel line. Not that those SUs and Strombergs were very sensitive to dirt, it simply blows through. The problems started with fuel injection...
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richr
Posts: 216
Joined: Mon Dec 03, 2018 8:47 am
Location: Southern end of North Yorkshire, UK

Re: Fuel filter change

Thu Jun 11, 2020 4:49 am

My Renault 5s (various models, 1.1, 1.7 and a couple of GT Turbos mainly) had the plastic filters in the engine bay before the cam driven fuel pump, apart from the GT Turbos which have electric pumps and metal cannister filters inconveniently located under the car in front of the fuel tank. And one of my GT Turbos was low enough that knocking the filter off on a speed bump was a very realistic possibility :)

Obviously on diesel cars the fuel filter is something you change regularly, and it's usually located prominently in the engine bay. My 1991 Mitsubishi Pajero had a heated fuel filter to prevent problems with fuel thickening at temperatures below -20C. Not that I really needed that much in the UK!
2015 Mitsubishi Outlander PHEV GX4H (petrol/electric)
2008 Volkswagen Caravelle (diesel)
(recently departed - 2004 Subaru Outback 3.0Rn (LPG), 1991 Mitsubishi Pajero 2.5 LWB (WVO))

greendwarf
Posts: 2219
Joined: Tue Aug 05, 2014 1:32 pm

Re: Fuel filter change

Fri Jun 12, 2020 12:30 am

Aah! so having a fuel filter was for those over sensitive foreign types, whereas a "real man's" British car (like jaapv's TR) was tough enough to cope with a bit of dirt :lol:

I drove mostly Dagenham Dustbins - so no problem there :roll:

Kesto
Posts: 211
Joined: Fri May 20, 2016 4:09 pm

Re: Fuel filter change

Thu Jun 18, 2020 1:53 am

Not a technical person , but don't you get fuel cleaner additives? Or use one full tank of Shell super fuel which contain additives to clean?

richr
Posts: 216
Joined: Mon Dec 03, 2018 8:47 am
Location: Southern end of North Yorkshire, UK

Re: Fuel filter change

Thu Jun 18, 2020 3:40 am

Whilst it's true that petrol contains detergents and de-watering agents, the filters are designed to capture small bits of dirt (or on older cars with metal tanks and filler pipes, rust). For example if you fill up with petrol near the coast you're inevitably going to get the odd grain of sand in. Sand and bits of grit are insoluble so there's no additive that could get rid of them, but a physical filter (usually a woven felt type material) will collect them.
2015 Mitsubishi Outlander PHEV GX4H (petrol/electric)
2008 Volkswagen Caravelle (diesel)
(recently departed - 2004 Subaru Outback 3.0Rn (LPG), 1991 Mitsubishi Pajero 2.5 LWB (WVO))

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