• 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)

TR6 Drain the fuel tank - five year old gas?


I haven't started the car in almost five years. It's been sitting in my garage and this is in NC so it does not get that cold. I pulled the plugs and put a little bit of 5W-20 oil in each of the cylinders and turned over the engine several times. I also pulled the radiator out and cleaned it with my garden hose. Now my question is do I need to drain the gas and put new gas in her? Also will I need to clean the carbs up to get gas to go through them?


Country flag
I wouldn't be surprised if the carbs' needle valves were stuck and the rubberlike air valve diaphram deterioated. Other flexible carb parts such as the throttle shaft seals and the throttle bypass diaphragm may need replacement but those two items shouldn't prevent you from at least starting the engine..
As far as draining the gas tank...I would.


Okay good to know. I think my local environmental center will take the gas.

Bob Claffie

Jedi Knight
Country flag
We had a similar question this summer with my son's long stored MG. We drained the gas but on reflection I don't think it was necessary. Bad (old) gas really STINKS. Our gas came out smelling as though it was fresh. Give yours the "nose" test and you may save yourself some extra work. Blow out the lines and run some gas through the system (before the carbs) and check for sludge and sediment and you may get a pleasant surprise. Bob


What part of NC?

Regardless, I would siphon out the old gas and mix it slowly (in small portions) with the gas you burn in other vehicles or lawncare equipment. A little bit mixed in will only slightly affect the larger volume and you won't have to wait for a collection day.

As Poolboy said, a number of other things will need attention. If you parked the car with the float bowls full you are likely to find the float valves gummed up and the mixture jet and needle may also be gummed up. As a minimum I would consider removing the float bowls to clean everything out before trying new gas. On our GT6 this can be done (with care) without removing its carbs from the intake.

Don't forget that after you put the new gas in the tank you should pump a bit of fuel through the system into a catch bucket, then replace the old filters. That should prevent old gas and debris from making it to your carbs.

Unrelated to the engine's gas and oil, if parked for 5 years, you may also want to flush the brake system to get new fluid in there.
Similar threads
Thread starter Title Forum Replies Date
wkilleffer MGB Classic Gold fuel tank drain plug MG 12
P Fuel from rear manifold drain?? Austin Healey 6
D Socket for TR3 Gear box drain plug Restoration & Tools 6
D TR2/3/3A Battery Box drain Triumph 9
chicken Holes for Drain Channel Pipe Austin Healey 4
B TR4/4A Oil Drain plug size Triumph 14
T BJ8 Drain Channel Removal Austin Healey 2
Lin Toyota 5-speed bell housing drain hole Austin Healey 14
K TR2/3/3A Radiator drain tap? Triumph 4
Lin Intake manifold drain pipes Austin Healey 29
M TR2/3/3A TR3 Overdrive filter drain plug Triumph 7
S TR2/3/3A The big brass drain plug on the OD does not thread in easily Triumph 9
drooartz Leaking 5-speed drain plug Spridgets 26
J TR2/3/3A Oil drain plug stuck Triumph 10
S TR2/3/3A Overdrive drain plugs leaks Triumph 3
S TR2/3/3A source for those little drain hoses Triumph 6
Csarneson How do the outer sills [rockers] drain water? Austin Healey 7
af3683 TR2/3/3A TR3B Oil Drain Plug Triumph 10
Lin Rear differential drain plug leak Austin Healey 16
P Is there a seal between the drain channel and drain box? Austin Healey 8
TulsaFred aluminum BE radiators on ebay, drain plug thread? Spridgets 12
JimLaney Drain holes relieve wing water retention? Spridgets 3
S TR2/3/3A Replacement of Engine Coolant Drain Triumph 3
warwick-steve Magnetic Gearbox Drain Plug Austin Healey 28
C TR2/3/3A A-type overdrive drain plug oring Triumph 1
S TR4/4A Plenum Drain hoses Triumph 4
C BN1 Overdrive drain plug question Austin Healey 0
Bob_Spidell Clip and ferrule for manifold drain pipes Austin Healey 4
N Drain plug?? Spridgets 17
M TR2/3/3A Air Vent Drain Hose Triumph 5
B BJ7 Drain Channel and Small Waist Trim piece question Austin Healey 13
Marla TR4/4A Oil Drain Plug Triumph 4
catfood BN1 Rear Axle drain plug. Austin Healey 7
bighealeysource Source for correct washer for overdrive drain plug Austin Healey 6
Healey Nut Another drain channel question . Austin Healey 21
Lutz Kramer Drain channel and trim rail Austin Healey 4
busybrit Removing the drain tube fron the rear mains cap. Austin Healey 4
KVH General Tech Transmission Drain Plug Too Tight? Triumph 5
Martinld123 Drain Pipe Rear Main Bearing Cap BN2, remove? Austin Healey 2
chicken Hood drain channel Austin Healey 18
bighealeysource Fibre washer on O/D drain plug doesn't fit well Austin Healey 7
G MGB-GT Cowl vent drain question MG 3
K TR2/3/3A Gearbox drain plug threads stripped? Triumph 8
T TR2/3/3A Overdrive drain magnets Triumph 10
T TR4/4A Oil drain hole from rear crank seal/rear main cap Triumph 3
D TR6 Power drain Triumph 3
TRMark TR4/4A Leaking Drain Tap before I could even get the radiator full Triumph 1
af3683 TR2/3/3A Trunk Edge Drain Tube Triumph 6
F Problem fitting rear drain tube to inlet manifold on BT7 Austin Healey 4
Boggsy64 MGB Heater / Air box drain MG 21

Similar threads