Gordon and List:
After I rebuilt my carburetors in January 2001 I got my car back on the road
in March (after some other projects as well). The car ran great for about a
month and then started to cut out, as you describe. After much cobbling
with the carbs, timing, filters, etc. I was feeling very frustrated and even
considered converting to Webers! Well, just last week after spending a hour
with a great mechanic at a local British car shop we found what had been
causing the problem all along;
On the Stromberg carbs there is a approx 3/8" diameter vent hole for the
float bowl. There is a corresponding hole on the air filter backing plate
to allow, obviously, for venting. The hole on the backing plate for the
front carb was completely plugged up with a clear, hard substance; probably
gasoline. When the hole was cleared all rough running symptoms went away!!
Try checking that possiblity in your troubleshooting.
Good luck with your car.
Best regards,
Walt Fogle
'69 TR6, CC30689L
Woodinville, WA
Gordon wrote:
>
>Hi folks
>
>I need some help! I have a 75 TR6 that has been working great for the last
>three years with minimal problems. However, I have had problems with the
>engine cutting out over the past 2-3 days. A couple weeks ago, I pulled
>onto the highway and for a second or so, it felt like I had lost three
>cylinders, but they immediately came back, and it didn't happen again. On
>Wednesday, my wife and I went for a drive and after about 90 miles on the
>highway, we drove into Fredericton. Driving towards the uptown there is a
>steep grade, and the car cut out again. It felt like three cylinders again,
>then no cylinders! I thought it might be vapour locked, so parked it for 15
>minutes. Started no problem, but when I started up the hill again it
>started cutting out. I went along a cross street, occasionally hitting all
>6 cylinders, but mostly on partial power. We drove into a park entrance and
>I pulled off the air cleaner. Pistons in carburetor both seemed to be going
>up and down OK, all wiring tight. Finally called a tow truck and had it
>taken to Canadian Tire, mainly because they are open evenings.
>
>They checked the car out a bit, found the battery was shot. It had been
>working fine, never failed me, but at the garage it was dead. Bought a new
>battery and drove back to our camp, about 30 miles. Next day we drove to
>Kings Landing Historical Village, then back to the camp - about 10 miles
>each way. Later in the day we started home, got to Woodstock about 30
>miles, and decided to take a side trip over a small mountain. My wife joked
>that she hoped the car wouldn't quit, and within a mile it cut out again.
>We found a place to turn, drove back down the hill and drove home, another
>30 miles without incident.
>
>Any ideas on what I should check? The problem seemed to appear when going
>up a steep hill. When in Fredericton, I was down to a 1/4 tank, but later
>in Woodstock the tank was 3/4 full. I haven't tuned the car in the last
>year, has about 3500 miles since I tuned it up last, but has been working
>so well I didn't see the point! The carburetors were rebuilt 3-4 years ago
>before I bought the car, but seem to work fine.
>
>All suggestions gratefully accepted!
>
>Thanks
>Gordon in New Brunswick, Canada
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