• 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)
Tips
Tips

TR6 1973 TR6 ZS carb mixture

sundown

Jedi Hopeful
Offline
I am trying to fine tune the mixtures on the 175CD carbs by the spark plug method do I pull the #1 and #4 plug and check the color or do I need to pull all the plugs?
 

TR3driver

Great Pumpkin - R.I.P
Offline
You can look at just #1 & #4 if you want.

Worth noting that unleaded fuel produces different colors than the old leaded did. Lead oxide is a very strong white pigment (which is why they used to use lead in paint) so it was part of the color seen on plugs (and inside tail pipes). And some modern fuels use other additives that produce other colors. I don't know if anyone in the US still uses MMT for example, but it leaves a funny pink-orange colored deposit on the plugs.
 

poolboy

Yoda
Country flag
Offline
One and six because of the configuration of the intake manifold would be my choice, but if this is the first time, I'd pull them all, but only after I had driven at least 250 miles, enough for whatever color has time to develop.
By pulling all you might see some differences among the plugs. If uniform amongst the set of 3 then you can feel safe in selecting one the next time....and there will be a next time, to represent the other 2.
 
Similar threads
Thread starter Title Forum Replies Date
sundown TR6 1973 TR6 carb/ TBV Triumph 5
J TR6 1973 TR6 Rear Brake Operation Questions Triumph 4
M Wanted Tr6 1973 Triumph Classifieds 2
nichola TR6 1973 TR6 Restoration - it’s a roller again! Triumph 4
sundown TR6 1973 Tr6 alternator Triumph 6
B For Sale 1973 tr6 Triumph Classifieds 0
GBRandy TR6 1973 TR6 Rear Frame / Body Bushings Triumph 3
W TR6 1972 or 1973 TR6 Triumph 9
sundown TR6 1973 TR6 plugs Triumph 4
sundown TR6 1973 TR6 mossmotors sport exhaust system Triumph 6
sundown TR6 1973 TR6 blow by or leak? Triumph 6
sundown TR6 1973 TR6 flasher question Triumph 6
sundown TR6 1973 tr6 Triumph 3
sundown TR6 1973 TR6 Heater Triumph 1
sundown TR6 1973 TR6 seats Triumph 1
sundown TR6 1973 TR6 vacuum reading Triumph 2
sundown TR6 1973 TR6 oil between the head and engine block? Triumph 11
sundown TR6 1973 TR6 bypass valve Triumph 1
sundown TR6 1973 TR6 fuel pump Triumph 4
sundown TR6 1973 TR6 door check straps Triumph 3
sundown TR6 1973 TR6 hydraulics Triumph 1
sundown TR6 1973 TR6 emissions plumbing Triumph 1
sundown TR6 1973 TR6 emissions plumbing Triumph 8
sundown TR6 1973 TR6 timing light Triumph 3
sundown TR6 1973 TR6 vacuum leaks Triumph 1
sundown TR6 1973 TR6 brake booster hose Triumph 7
sundown TR6 1973 TR6 charcoal canister Triumph 6
B TR6 1973 tr6 water pump Triumph 4
sundown TR6 1973 TR6 strombergs Triumph 3
sundown TR6 1973 tr6 Triumph 8
sundown TR6 1973 tr6 Triumph 5
sundown TR6 1973 tr6 Triumph 8
sundown TR6 1973 tr6 Triumph 0
sundown TR6 1973 tr6 Triumph 3
sundown TR6 1973 tr6 oil pressure light Triumph 3
sundown TR6 1973 TR6 flasher unit Triumph 1
sundown TR6 1973 tr6 wiring Triumph 21
jerrybny TR6 1973 TR6 Seat Covers Triumph 2
2wrench GT6 1973 Triumph GT6 MK3 Engine for a TR6, yes or no? Triumph 10
G TR6 Zenith Stromberg [1973 TR6] help Triumph 5
JoeC TR6 1973 TR6 parts car Triumph 2
jerrybny TR6 1973 TR6 Front License Plate Bracket Triumph 1
R TR6 1973 Final drive issues Triumph 5
K 1973 MGB for sale MG Classifieds 0
S For Sale Triumph GT6 Workshop Manual on CD/ROM – 1966 through 1973 Models Triumph Classifieds 0
doc50 Wanted H2 SU carbs / manifold for 1275 1973 MG MIdget Spridgets Classified 3
J MGB 1973 MGB Value MG 8
E TR6 1973 TR-6 Unbalanced Intake Triumph 11
Paulus Thermovacuum switch for a 1973 V12 XKE Jaguar 4
Boink 1973 Marcos MINI Spotted 1

Similar threads

Top