guykay Posted September 16, 2012 Share Posted September 16, 2012 Took Sammy out for a run yesterday and got the engine good & warm. On return the engine idle speed was up & I found it near impossible to engage reverse. Any ideas why the idle speed should increase when hot. When the vehicle is cold it idles fine Quote Link to comment Share on other sites More sharing options...
robin craig Posted September 16, 2012 Share Posted September 16, 2012 It might give some of us mere mortals more of a chance of helping you by telling us what Sammy is? I am assuming it is a CVR(T) Samson and you can't change from forward to reverse with a racing J60 R Quote Link to comment Share on other sites More sharing options...
guykay Posted September 16, 2012 Author Share Posted September 16, 2012 Sorry, quite right Samson CVRT. engine isn't really racing, but the idle speed is up sufficiently to make selection of reverse difficult Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted September 16, 2012 Share Posted September 16, 2012 Sorry, quite right Samson CVRT. engine isn't really racing, but the idle speed is up sufficiently to make selection of reverse difficult You should set idle speed and mixture when the engine is hot, this will alleviate the problem. Quote Link to comment Share on other sites More sharing options...
guykay Posted September 16, 2012 Author Share Posted September 16, 2012 OK, but won't that mean that the engine will not idle when the engine is cold. Also, how do I adjust idle speed & mixture? Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted September 16, 2012 Share Posted September 16, 2012 OK, but won't that mean that the engine will not idle when the engine is cold. Also, how do I adjust idle speed & mixture? It will if you apply the choke. Mixture, there are two screws that have to be adjusted together, near base of carb. Slow running screw is by the throttle arm on the carb. Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted September 16, 2012 Share Posted September 16, 2012 , but the idle speed is up sufficiently to make selection of reverse difficult Just had a thought. when changing forward to reverse or vice versa, you should move the selector smartly from on to another, if you hesitate in between, you will not engage, and will have to stop the engine. same on Ferret, Saracen, etc. make sure the linkage is free, and try doing it quickly in one movement. Quote Link to comment Share on other sites More sharing options...
timbo Posted September 16, 2012 Share Posted September 16, 2012 Try this... http://hmvf.co.uk/forumvb/showthread.php?18770-Jaguar-J60-carb-diagram&highlight=Carb+tuning Richard is right if you set the correct idle speed when cold it will be too fast when warm, let it warm up for a few mins when you first start it and it will be fine.. Cheers Timbo Quote Link to comment Share on other sites More sharing options...
BRDM Driver Posted September 17, 2012 Share Posted September 17, 2012 I found that, even with idle set quite low, fwd/rev can be a pig unless you are quick with the change and don't leave the selector in 'neutral' otherwise you have to turn off the engine to get it back into drive. I love the way that the control was designed so forward is pulling back and reverse is pushing forward! :nut: Quote Link to comment Share on other sites More sharing options...
theredkite Posted September 17, 2012 Share Posted September 17, 2012 I too have the same fwd/rev problem. Although I can't find the report from a quick google search, I recall that even in Afghanistan they've had the same problem with the various CVR(T)s out there. I did have a quick look with the front plate off, but the connection there wasn't obvious. Is there a way of checking/maintaining the fwd/rev control without major surgery? Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted September 17, 2012 Share Posted September 17, 2012 I too have the same fwd/rev problem. Although I can't find the report from a quick google search, I recall that even in Afghanistan they've had the same problem with the various CVR(T)s out there. It is not a problem, but is due to the design. As I pointed out in my earlier post, no different to any of the wheeled armour, Ferret, Fox, Saracen, Saladin. It is a sliding gear change and he who hesitates, misses it. It has to be done smartly and it will go through easily, just make sure it is all free to move on the exterior linkage. If you do miss it, hold the knob and move it as you turn the ignition off and on again, you will find with practise this will work. Quote Link to comment Share on other sites More sharing options...
timbo Posted September 17, 2012 Share Posted September 17, 2012 I too have the same fwd/rev problem. Although I can't find the report from a quick google search, I recall that even in Afghanistan they've had the same problem with the various CVR(T)s out there. I did have a quick look with the front plate off, but the connection there wasn't obvious. Is there a way of checking/maintaining the fwd/rev control without major surgery? The selector rod is on top of the gearbox and works off a pivoting linkage in the hull. There really isnt much to go wrong although i guess a drop of grease/lube cannot hurt. Quote Link to comment Share on other sites More sharing options...
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