• Hi Guest! Being a Paying Supporter is NOT a requirement to participate at BCF. However, subscribing will help ensure we can continue to serve the LBC community for years to come. If you enjoy BCF and find our forum a useful resource...Please consider supporting us by **Upgrading**
    (PS: Subscribers don't see this banner)

Purolator Fuel Filter Alert, I guess.


Jedi Trainee
I've used the Purolator F20011 for about 5 years w/o any problems. About 3-4 months ago I had a "stumbling" problem when winding up to high rpm's. First thought - the fuel filter was plugged, so changed it. When I blew into the old filter, there was a definite restriction. When it was dry, however, there was none. Hmmm.

I put in some Gumout because it had been Winter. Maybe the small ball from in the Grose jets was getting hung up....(I like my Grose jets - not the issue) The problem was still there. Ok - did the tune-up, changed carb diphragms, still there. Scratched head. Drank beer. Checked fuel pump, checked for collapsed hoses, still there. Starting to think the Sports Coil was heading south, or the Magnecors....

Pulled the new fuel filter out, and it was really tight - couldn't blow through it. With the fuel filter out of the loop - problem disappeared. I'm thinking something in the media swells with todays "modern" gasolines. And later, with the filter dried out, it could be blown through easily. So - watch out if you use a F20011.


Jedi Warrior
Country flag
I've used Purolator F29158 to back up the electric Purolator fuel pump on my TR3A for about 5 years with no problems. We're fortunate to be able to drive year-around so Gumout is not an issue with us. However,I did a restro on a MGTC several years ago & rather than drain the tank, I used Gumout. Once back on the road it didn't "stumble", it QUIT! All quick-fixes failed until I bypassed the filter. I don't remember the brand or model of the filter but until I drained the tank and refilled with "non-pickled" fuel, my filter would clog. My LBC guru at that time recommended a fuel preserve product called "Essuntialube". JUst a thought.


Great Pumpkin - R.I.P
PeterK said:
Water will clog a fuel filter like that.
Yup. Paper element filters swell when they get wet, and can choke off fuel flow. The problem has been around for a long time (first happened to me nearly 40 years ago), but the ethanol added to most gas in the US has aggravated the problem considerably. Some sources have gone as far as recommending the addition of a water separator before the paper element filter.



Jedi Knight
Well this is food for thought. My Spitfire has been acting up a bit like this the past few drives. Methinks me shall change out the filter.
Similar threads
Thread starter Title Forum Replies Date
aeronca65t Facet, Purolator fuel pump MG 11
af3683 TR2/3/3A Original Purolator Oil Filter Canister Triumph 6
T TR2/3/3A Purolator Oil Filter Leak Triumph 10
T TR2/3/3A Is it a Purolator or Tecalemit? Triumph 5
H Purolator oil pressure relief spring Triumph 1
K Oil pressure or balance valve on top of Purolator Triumph 1
BritCarFan STP versus Purolator oil filters Jaguar 10
T SU Fuel Pump Mounting Austin Healey 5
FlyingCat Spitfire Fuel Sender Unit Triumph 2
G Twin HS4 Su's leaking fuel Spridgets 17
G General MG Leaking Fuel on twin HS4's 1500 MG Midget MG 5
JPSmit Fuel tank sender - how does it work? Spridgets 4
Boink Early Mini Fuel Gauge - adjusting it British Motor Corp 0
RJS General TR Winter Blend Fuel Triumph 1
D TR2/3/3A More Fuel pump questions. Triumph 10
Donald1107 59 TR3A Fuel Pump Triumph 48
BobHaskell SU Fuel Pump Pressure Austin Healey 1
S Large capacity fuel tank Spridgets 1
D TR2/3/3A rearmost fuel line question Triumph 5
fpstude TR4/4A Fuel Pipes Connector Triumph 4
Healey Nut Fuel Sender Austin Healey 3
Cutrog1 Fuel Pump Ticking Austin Healey 13
S WANTED: Healey BN1 "Smiths" Fuel Gauge (Dead or Alive) Austin Healey Classifieds 3
Cutrog1 BJ8 Fuel Tube Installation Austin Healey 10
MGTF1250Dave T-Series MG TF fuel line from tank to pump MG 3
D TR6 1972 TR-6 Fuel Vapor Recovery System Triumph 4
JPSmit Fuel line - gas tank question Restoration & Tools 5
R TR2/3/3A Fuel Gauge Triumph 19
M TR2/3/3A Fuel Line Fitting at the Tank. Triumph 5
S SU fuel pump servicing Austin Healey 4
steveg TR6 Source for fuel line P-clip Triumph 17
71TR6 TR2/3/3A AC Fuel Pump Lever Triumph 10
E MGB 1965 mgb fuel pump removal MG 2
D For Sale Su fuel pump Other British Classifieds 5
D For Sale Su fuel pump Austin Healey Classifieds 5
BLong63AH BJ7 Hard Fuel Lines Austin Healey 20
Michael Oritt SU H6 carb for Le Mans--order of assembly of fuel bowl lid Austin Healey 2
TRopic6 For Sale TR2/3 Brass Fuel Shutoff Tap [for parts] Triumph Classifieds 0
G Inertia Cut-Off Switch - E-Fuel Pump to Ignition [Key] Switch Austin Healey 3
Ljohns New Midget/Sprite Fuel Tank Austin Healey Classifieds 1
T Wanted Smiths fuel gauge for Mk 1 Bugeye Sprite [FG2530/31] Spridgets Classified 1
B AH Spares Fast-Flow Fuel Manifold Austin Healey 2
S Fuel gauge calibration procedure Austin Healey 18
M Fuel starvation Austin Healey 7
I TR6 TR6 - Fuel leaking from bottom of Evaporator Canister Triumph 11
F Spitfire Triumph Spitfire , what fuel to run Her on with no engine history? Triumph 11
C MGA Fuel gauge question MG 7
vette A Quiet SU Fuel Pump Austin Healey 2
B Under bonnet fuel Austin Healey 15
S Wanted 1959 Bugeye Fuel Gauge Austin Healey Classifieds 0

Similar threads