running problem?????

[Locktc7440@aol.com]

OK all of you xpag gurus I have a problem for you. A good friend has a TD (I know but same engine as the TC) that starts and runs fine. As long as you are moving it seems to run fine. Stop for a stop sign or traffic light or let it idle in the driveway it will quit just like someone turned off the ignition. It does not sputter like it is running out of fuel but just stops. It will then start right up just like nothing happened. It has new plugs, points, condensor, rotor, wires, and cap. We are totaly mystified. Any and all ideas greatly appreciated. I feel it is electrical but have no clue where. HELP!!!

[Mark McCombs]

I would check out the ignition switch. It could have an intermitent short, to the point where it unshorts when you move the tumblers to restart. Lucifer Lucas, TC666 Dantes, Hades

----- Original Message ----- From: Locktc7440@aol.com> To: mg-tabc@yahoogroups.com> Sent: Saturday, September 29, 2001 9:44 AM Subject: [mg-tabc] running problem????? > OK all of you xpag gurus I have a problem for you. A good friend has a TD (I > know but same engine as the TC) that starts and runs fine. As long as you are > moving it seems to run fine. Stop for a stop sign or traffic light or let it > idle in the driveway it will quit just like someone turned off the ignition. > It does not sputter like it is running out of fuel but just stops. It will > then start right up just like nothing happened. It has new plugs, points, > condensor, rotor, wires, and cap. We are totaly mystified. Any and all ideas > greatly appreciated. I feel it is electrical but have no clue where. > HELP!!! > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > >

[Wiedemeyer]

Try opening both jets about 3 or 4 flats, and I'll bet the problem goes away. (I had the exact same problem, and that cured it for me.....the jets were set a little too closed at idle.) Bob

>OK all of you xpag gurus I have a problem for you. A good friend has a TD

(I

>know but same engine as the TC) that starts and runs fine. As long as you

are

>moving it seems to run fine. Stop for a stop sign or traffic light or let

it

>idle in the driveway it will quit just like someone turned off the

ignition.

>It does not sputter like it is running out of fuel but just stops. It will >then start right up just like nothing happened. It has new plugs, points, >condensor, rotor, wires, and cap. We are totaly mystified. Any and all

ideas

>greatly appreciated. I feel it is electrical but have no clue where. >HELP!!! > > > >Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > >

[Robert Johnson]

Check the setting of your idle stop screws on the the butterfly rod (throttle shaft). I have in the past encountered the situation where I set the idle screws on SUs properly when doing a tune-up but, the little springs on the screws had lost their "springiness" with the result that the screws soon backed out from vibration while running and the butterflies would then close completely at idle and the engine of course died immediately. So, check those little springs. Press on regardless. Bob Johnson - '46 TC 1450 Crescent City, California

[LuckyFloridaLin@aol.com]

MG friend had a similar situation. Each time the gasoline tank went below the level of the SU Carbs it would cause this problem when he made a sharp left turn. It would not start until the engine cooled off. Tally Ho! Thom Collins

[Bill Traill]

Is there a possibility the ignition system is running off the generator and not the battery due to a regulator problem or a broken wire somewhere? When the generator is at idle the cut-out opens and shuts off the juice.....Opinions ?? Bill Traill

[David and Joyce Edgar]

This would not account for it starting right back up again. As I recall they were able to restart the car without problem. I have no other guess except I would research the fuel angle more even though it does shut down quickly. David Edgar, TC 5108 El Cajon, California At 8:57 AM -0700 9/30/01, Bill Traill wrote:

>Is there a possibility the ignition system is running off the generator >and not the battery due to a regulator problem or a broken wire >somewhere? When the generator is at idle the cut-out opens and >shuts off the juice.....Opinions ?? > >Bill Traill

[Dean Jensen]

----- Original Message ----- From: Dean Jensen djensen@accessus.net> To: Locktc7440@aol.com> Sent: Saturday, September 29, 2001 9:20 AM Subject: Re: [mg-tabc] running problem????? > First need to determine if it is electrical or fuel. Fuel is hard to > be sure, if you have a voltmeter, suggest that you put one probe > on the wire for the distributor, the other to ground, and see what > happens to the voltage just as it stops, try it a couple of times > because we can not be sure that when it stops the points are open > or closed. Let me know the results and will try to take it from there > or there might be someone else that can determine the cause. As an after thought. the one thing that jumps in my mind, by chance the tac reduction box is not hitting the distributor? > > Regards Dean Illinois > > ----- Original Message ----- > From: Locktc7440@aol.com> > To: mg-tabc@yahoogroups.com> > Sent: Saturday, September 29, 2001 8:44 AM > Subject: [mg-tabc] running problem????? > > > > OK all of you xpag gurus I have a problem for you. A good friend has a TD > (I > > know but same engine as the TC) that starts and runs fine. As long as you > are > > moving it seems to run fine. Stop for a stop sign or traffic light or let > it > > idle in the driveway it will quit just like someone turned off the > ignition. > > It does not sputter like it is running out of fuel but just stops. It will > > then start right up just like nothing happened. It has new plugs, points, > > condensor, rotor, wires, and cap. We are totaly mystified. Any and all > ideas > > greatly appreciated. I feel it is electrical but have no clue where. > > HELP!!! > > > > > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > > > > >

[HaraRyoichi]

I have had simirar "sudden death" phenomenon with my TC6903. The engine would just stop when the car is cruising at a good speed on motorways. It happened first in a tunnel, second time before a toll gate. Very annoying. The engine would re-start in ten or so minutes however and that left me puzzled as I could not find out why. The mystery was solved when the engine stopped right on a 2-km long toll bridge during a rally. Most annoying. Everybody came rushing at me and an engineer friend of mine noticed when he touched the ignition coil it was very hot. A quick check showed that the coil was not functioning so we borrowed a Bosch coil somebody was carrying as a spare and the dear old TC was back on the road and finished the rally. We have figured out that the deteriorating insulation(oil?) inside the coil would break down as the temperature rises due to the driving condition plus the atmospheric temp. and restore itself as it cools down, resulting the strange on-off of the ignition system, The coil was a Lucas. But what can we say but a thank-you to a fifty year old part that had been working honestly in his place for (I assume) such a long time. Rick Hara Japan

[Eric Worpe]

The suggestion that the coil could be failing due to overheating seems quite probable. At low RPM the coil's average current increases due to the fewer interruptions to the current caused by the contact breaker's opening. The increase in current results in the coil heating up, expanding and somehow this produces a broken connection. However, it's only by switching off the ignition, that the coil would have a chance to cool down and the fault clear itself. Leaving the ignition on, and then being able to restart the engine would indicate that another fault is probable. Hope this helps, Eric.