millerpj Posted August 14, 2008 Report Share Posted August 14, 2008 Recently returned to a sidescreen TR (TR3A, commission TS 65939L) forty years after owning a TR2. Notice smell of petrol from fuel cap and understand some are vented and some not. The fibre gasket inside the cap appears brittle and probably isn't doing much - any ideas? Thanks Quote Link to post Share on other sites
bob-menhennett Posted August 14, 2008 Report Share Posted August 14, 2008 Hi millerpj I assume you are referring to a "flip top" petrol cap rather than a screw down one.When I faced this problem on my TR4 restoration a year or two back the gaskets where unavailable.Might be worth checking with the major suppliers ( listed on the main TR Register website ) that this is still the case. The trick, TRGB let me in on, was to use a rubber gasket ( for a spin on oil filter ) cut down to size lengthwise and a blob of glue at the join to hold it in.Any flat sided gasket of the right size, to fit the groove in the moulding, would do. Welcome back to TR motoring. Bob Quote Link to post Share on other sites
stuart Posted August 14, 2008 Report Share Posted August 14, 2008 Recently returned to a sidescreen TR (TR3A, commission TS 65939L) forty years after owning a TR2. Notice smell of petrol from fuel cap and understand some are vented and some not. The fibre gasket inside the cap appears brittle and probably isn't doing much - any ideas? Thanks There is no need for a vented cap on sidescreen cars as there is a vent from the top right hand side of the tank that goes down and out through the raised portion of the floor where the tank sits. The fibre washers in the caps are well past their best by now and I dont think they are available, I tend to use a large "O" ring instead. It may be worth checking the condition of the filler hose between the cap and the tank and also the fuel gauge sender gasket because all of these can cause petrol smells if they arent in the best of conditions. Stuart Quote Link to post Share on other sites
vivdownunder Posted August 14, 2008 Report Share Posted August 14, 2008 After you sort the filler cap gasket, if fuel odours persist, it's often the bottom hose clamp that needs tightening on the filler to tank joiner hose. Because the tank nozzle fits inside this hose, when filling up, fuel can seep down between the nozzle and the hose if the bottom clamp isn't really tight. On occasions the fuel smell can get really bad in the car, and the usual response is to go looking at the carbie end, whereas t'other end is the culprit. Regards, Viv. Quote Link to post Share on other sites
millerpj Posted August 21, 2008 Author Report Share Posted August 21, 2008 After you sort the filler cap gasket, if fuel odours persist, it's often the bottom hose clamp that needs tightening on the filler to tank joiner hose. Because the tank nozzle fits inside this hose, when filling up, fuel can seep down between the nozzle and the hose if the bottom clamp isn't really tight. On occasions the fuel smell can get really bad in the car, and the usual response is to go looking at the carbie end, whereas t'other end is the culprit. Regards, Viv. Quote Link to post Share on other sites
millerpj Posted August 21, 2008 Author Report Share Posted August 21, 2008 Thanks guys - all sorted with nice flat rubber seal from hydraulic pipe shop. Paul Napier NZ TR3A Quote Link to post Share on other sites
Nigel Lay Posted August 21, 2008 Report Share Posted August 21, 2008 The simplest of things, thanks all - wondered what to replace the 'knackered' fibre gasket with on the filler cap Nigel (with TS952) Quote Link to post Share on other sites
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