[6pack] TR6 Plugs Carbon Fouled

[COLIN THOM]

OK 

If we're clear that your plugs are carbon-fouled, and not oil soaked, then I think the problem isn't really a problem. Running the engine with the choke knob pulled out, cold, for fairly short periods of time, will give you what you're getting. The carbs are running very rich and and the engine/plugs aren't getting up to operating temperature. Carbon is accumulating as you do these short, cold runs but when the engine is allowed to run up to operating temperature, the accumulated carbon burns off the plugs. If, after a decent run at operating temperature, the plugs are a light brown color, you're in good shape. 


From: daybell7 at aol.com 
To: 6pack at autox.team.net, colinthom at shaw.ca 
Sent: Friday, December 29, 2017 3:50:52 AM 
Subject: TR6 Plugs Carbon Fouled 

With clean plugs installed, I can drive the car all day long. Plugs are clean afterward. 

After a few weeks of not driving the car, but only starting to move it around the garage, etc., the plugs become fouled with carbon. 
--------------------------------------------------------------------------------------------------- 
Can u please clarify this: 

?The problem is the plugs foul quickly. 

As long as I run the car, the plugs don't foul. ? 

Colin 
---------------------------------------------------------------------------------------------------- 

Thanks, What can I do? I?ll try leaning in out and a hotter plug (12 series). Add upper cylinder lubricate? I did a compression test (1-6 cylinders): 103,105,100,125,120,75. Number six with a squirt of oil read 85. It runs strong otherwise, but needs the choke to start. 

I haven?t adjusted the valves. I think it just needs cleaned out and run to be reliable. Thanks again. 
Steve Hughes 


------------------------------------------------------------------------------------------------------------- 

next time before starting but after sitting , pull a plug or three and check for oil soak . you may have leaky valve seals . ask me how i know . . . 
ztr6 

--------------------------------------------------------------------------------------------------------------- 

My 73 has HS6 carbs. I need the choke to start, but once started I can relieve the choke immediately. The problem is the plugs foul quickly. 

As long as I run the car, the plugs don't foul. I think it's just the startups and not running the car when I move it around in and out of the garage, etc, that causes the carbon to build up. 

Should I lean the carbs more? I always thought the choke should be relieved gradually until the car warms up. Do I need a mixture meter? 

Thanks, 
Steve Hughes 
Gainesville, FL 


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/6pack/attachments/20180101/fa5371c0/attachment.html>