| Author | Message | ||
     Matthew Hunt New User Username: acebass Post Number: 2 Registered: 3-2011 |
Hi all, I've had my Shadow for over a year, with no isses, taking her out at the weekend. To cut a long story short my Commodore is in for repair so I have to use the Roller every day this week. The choke is stuck open. I understand that it is a common issue. The previous owner had a horizontal mark which is where the choke should line up, but its stuck open. It stinks of petrol and I cant get the choke to close. As this is a common fault I am wondering if any of you kind people would be able to help me understand how to gt it to return to its normal position. I tried a gentle press but its not budging. I am worried that it might damage something if I run it to work tomorrow as it is. Thanks Matt | ||
| Matthew Hunt New User Username: acebass Post Number: 3 Registered: 3-2011 |
Hi, I should requalify that it is the "arm" that is attached to the air intake that is stuck open. Not sure what this is as I am an ambitious amateur, is it a vacuum of some description? I am stressed...... Thanks Matt | ||
| Paul Yorke Grand Master Username: paul_yorke Post Number: 765 Registered: 6-2006 |
Hi Matthew, is the lever stuck up or down? The throttle pedal/linkage needs to be depressed for it to go down. Pre-injection cars need the accelerator pedal pressed down a couple of times to set the choke before cranking. It is operated by a Bi-Metallic spring. which turns the flap closed when cold (lever downwards) and slowly lifts it as it gets hotter. It gets it's heat from the small pipes (covered) that go to the exhaust manifold. (opposite side to the lever) Good Luck. | ||
| Matthew Hunt New User Username: acebass Post Number: 4 Registered: 3-2011 |
Hi Paul Its stuck in the "up" position. maybe I am sending a red herring in here, are you saying that it will be in the up/open position when the engine is hot? If thats the case, will it close when the engine cools? I'm sorry to ask daft questions, I am an ambitious amateur, not a mechanic I do my best thanks Matt | ||
| Paul Yorke Grand Master Username: paul_yorke Post Number: 766 Registered: 6-2006 |
Matt, it will be up when hot. It will stay up even when the engine is cold, until you press the accelerator. this allows the lever to drop, flap to close, fast idle cam to set.  It's better to ask before you take it apart! | ||
| Richard Treacy Grand Master Username: richard_treacy Post Number: 2378 Registered: 4-2003 |
Hardly true. Sometimes the stove pipe circuit is ruptured inside the B-bank exhaust maifold or just the pipes are split. Othertimes the choke bimetallic spring is dislocated or broken during a hamfisted service. Worth a look. Normally these choke systes are unbelievably reliable. RT. |
