Rick W Posted June 2, 2011 Share Posted June 2, 2011 Well its a mystery. Had the steering box and column out on the GPW rebuilt and replaced it. Now it struggles to start up, if it does, its only with a jump start. Using the throttle linkage to control the revs it sounds as flat as a proverbial pancake. The exhaust glows red hot very quickly. We have not touched anything on the electrical side, just the steering assembly and while we were there the exhaust manifold. Any clues? Its almost as if the timing is out but we havent touched anything on the timing side.:??? Quote Link to comment Share on other sites More sharing options...
kpu121265 Posted June 2, 2011 Share Posted June 2, 2011 Sounds as if something is blocked. Does the manifold riser work? Which part of the exhaust system goes red? Ken Quote Link to comment Share on other sites More sharing options...
Rick W Posted June 2, 2011 Author Share Posted June 2, 2011 The manifold riser doesnt seem to do a lot, if anything. The front pipe to the manifold glows first then the exhaust manifold is starting to turn red. Quote Link to comment Share on other sites More sharing options...
Rick W Posted June 2, 2011 Author Share Posted June 2, 2011 Riser meaning heat control valve? Quote Link to comment Share on other sites More sharing options...
Tony B Posted June 2, 2011 Share Posted June 2, 2011 Did you, thump, breack or bend something during the dismantiling, rebuild? Quote Link to comment Share on other sites More sharing options...
Rick W Posted June 2, 2011 Author Share Posted June 2, 2011 Not as far as I can see, but I may have done, which is part of the reason Im asking really. From what I understand it can be fairly easy to knock the oil pressure pipe, but thats ok and its not oil related. Quote Link to comment Share on other sites More sharing options...
Rick W Posted June 2, 2011 Author Share Posted June 2, 2011 Doh! Forgot to put the spring stop in for the riser. The lever for the riser needs to be in the up position when installed? As the spring stop isnt in the lever goes down, hence the symptoms for lack of power, blocked exhaust type of thing. Quote Link to comment Share on other sites More sharing options...
kpu121265 Posted June 2, 2011 Share Posted June 2, 2011 "Riser meaning heat control valve?" Yep, that's what i meant. You couldn't have dropped something down the front pipe could you? I'd be tempted to drop or loosen the front pipe at the exhaust manifold and try it. It will sound awful if it runs.... B ut would be a way of ruling out a blocked exhaust.... Ken Quote Link to comment Share on other sites More sharing options...
Tony B Posted June 2, 2011 Share Posted June 2, 2011 Almost sounds like ti is firing backwards. Did any of the leads or distribitor get disturbed? Quote Link to comment Share on other sites More sharing options...
Rick W Posted June 2, 2011 Author Share Posted June 2, 2011 No Tony, sorted out the clip for the riser, still same problem. Will take off exhaust tomorrow to check nothing has blocked it, but I dont see how it could. It was fairly straightforward job. Quote Link to comment Share on other sites More sharing options...
Tony B Posted June 2, 2011 Share Posted June 2, 2011 You were also asking about throttle return spring wern't you? Maybe something in the carb? Quote Link to comment Share on other sites More sharing options...
Nick Johns Posted June 3, 2011 Share Posted June 3, 2011 (edited) Well its a mystery. Had the steering box and column out on the GPW rebuilt and replaced it. Now it struggles to start up, if it does, its only with a jump start. Using the throttle linkage to control the revs it sounds as flat as a proverbial pancake. The exhaust glows red hot very quickly. We have not touched anything on the electrical side, just the steering assembly and while we were there the exhaust manifold. Any clues? Its almost as if the timing is out but we havent touched anything on the timing side.:??? It has all the symptons of slipped valve timing, on start up if the morse timing chain is very worn, it has no tensioner, it can jump a few teeth and retard the valve timing, hence no revs and red hot exhaust, I've had exactly the same thing happen on several rover V8's that have the same morse chain, try advancing the distributor, if the engine runs better it will confirm whats happened, alas won't cure it, its timing cover off, new chain etc. Its not at all related to the steering box or manifold work its just coincidence Edited June 3, 2011 by Nick Johns Quote Link to comment Share on other sites More sharing options...
Rick W Posted June 3, 2011 Author Share Posted June 3, 2011 Thanks Nick, thought I would try that first and guess what, you were right! Advanced the timing on the dizzy by a good inch or so and it runs like a good 'un. Quote Link to comment Share on other sites More sharing options...
Nick Johns Posted June 3, 2011 Share Posted June 3, 2011 Thanks Nick, thought I would try that first and guess what, you were right! Advanced the timing on the dizzy by a good inch or so and it runs like a good 'un. It won't for long though, when the chain jumps again it'l be no go ! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.