paulsv8 Posted June 11, 2013 Share Posted June 11, 2013 Hi all, I’ve installed a rebuilt engine due to two melted pistons!I’ve just replaced the starter motor and battery as the old ones wouldn’t turn the engine over.Good oil pressure on turn over, petrol at the carb, spark plugs firing, I’ve replaced spark plugs, contact points, rotor, leads, the old side entry distributor cap for a top entry cap, but it still will not fire!I’m at a loss anybody know what I’m missing? Or is there a mobile mechanic someone can recommend in the Lyndhurst area in Hampshire? CheersPaul Quote Link to comment Share on other sites More sharing options...
HMaze Posted June 11, 2013 Share Posted June 11, 2013 1-3-4-2Cheers,Harry Quote Link to comment Share on other sites More sharing options...
GT6boy Posted June 11, 2013 Share Posted June 11, 2013 Not the old chestnut of dead fuel is it? If the engine has been rebuilt- how long has the fuel been standing in the tank? Quote Link to comment Share on other sites More sharing options...
GT6boy Posted June 11, 2013 Share Posted June 11, 2013 Confident the ignition leads are round the ri- oh. He beat me to it! ;D Quote Link to comment Share on other sites More sharing options...
GT6boy Posted June 11, 2013 Share Posted June 11, 2013 Choke out? It got me... :B Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted June 11, 2013 Share Posted June 11, 2013 Plug leads in wrong order is my favourite trick - though you do usually get some scary popping and banging with that as the fires get lit in the wrong place/time.......Nick Quote Link to comment Share on other sites More sharing options...
paulsv8 Posted June 11, 2013 Author Share Posted June 11, 2013 Hi guys, brand new fuel and leads are ok.1-3-4-2 Quote Link to comment Share on other sites More sharing options...
Alex Posted June 11, 2013 Share Posted June 11, 2013 Without meaning to be rude is the distributor definitely timed up? Quote Link to comment Share on other sites More sharing options...
paulsv8 Posted June 11, 2013 Author Share Posted June 11, 2013 Hi Alex, I've lined the distributor in roughly the same position as when I removed it initially. I had a mate turn the engine over while I slowly moved the distributor clockwise and then anticlockwise trying to get it to fire. Nothing. Quote Link to comment Share on other sites More sharing options...
Mark Hammond Posted June 11, 2013 Share Posted June 11, 2013 It might be 180 degrees out.M. Quote Link to comment Share on other sites More sharing options...
Alex Posted June 11, 2013 Share Posted June 11, 2013 1218 wrote:It might be 180 degrees out.M.My thoughts as well, I'd be inclined to retime it to no1 Quote Link to comment Share on other sites More sharing options...
GT6boy Posted June 11, 2013 Share Posted June 11, 2013 Ditto! :)Alex wrote:My thoughts as well, I'd be inclined to retime it to no1 Quote Link to comment Share on other sites More sharing options...
paulsv8 Posted June 11, 2013 Author Share Posted June 11, 2013 180 degrees out? How do I try and fix that? Quote Link to comment Share on other sites More sharing options...
Mark Hammond Posted June 11, 2013 Share Posted June 11, 2013 Time to number one cylinder and work leads around dizzy cap in correct firing order. 10 minute fix.M. Quote Link to comment Share on other sites More sharing options...
Alex Posted June 11, 2013 Share Posted June 11, 2013 Ok I'm ready to be shot down.....Get cylinder 1 to firing stroke(possibly the other point at which its at the top from now,comes up twice for every revolution).With the piston firing point rotor armature no1.This is your start point,work around and start car......I hope ;D Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted June 11, 2013 Share Posted June 11, 2013 Yes, need to time to no.1 plug on the firing stroke (ie TDC on 1 & 4 with the valves on 4 rocking)Nick Quote Link to comment Share on other sites More sharing options...
GT6boy Posted June 12, 2013 Share Posted June 12, 2013 ...baited breath :) Quote Link to comment Share on other sites More sharing options...
MSter Posted June 12, 2013 Share Posted June 12, 2013 Have you done a compression test??? Quote Link to comment Share on other sites More sharing options...
sam93 Posted June 12, 2013 Share Posted June 12, 2013 What do you mean by rebuilt engine, by who ?. Also I'd say that the fault is going to be within the camshaft timing, especially after you said about how you reinstalled the distributor.If all else fails, just strip it down & check this.Best of luck,Sam. Quote Link to comment Share on other sites More sharing options...
GT6boy Posted June 13, 2013 Share Posted June 13, 2013 Any news? :-/ Quote Link to comment Share on other sites More sharing options...
f1zzm Posted June 13, 2013 Share Posted June 13, 2013 When you say the starter and battery wouldn't turn it over that starts to ring alarm bells, how fast is it turning over nowwith the new battery and starter,A rebuilt engine will be a BIT tighter than a used one but should still turn over fairly rapidly, if not some thing is wrong, possibly tight bearings (crank not ground properly) tight pistons (not bored correctly)even piston rings not gaped correctly can cause this, cam timing is also a contender, if timing is set correctly to camshaft but not to crank position then it could be firing at bottom dead center with the valves closed, if this happens then the engine will relay struggle to turn over. I have seen all these faults on so called rebuilt engines, not saying that this is the problem as may well have been built to a high standard but never the less things to watch for. So remove king lead and plugs turn engine over, it should turn over quickly, if it doesn't some thing serious wrong,next check cam timing, turn engine by hand with thumb over number one spark plug hole plugs removed (should feel pressure as piston moves to top) do two full revaluations like this, you should get one pressure cycle, if you don't then cam is defiantlynot right, if you do then cam could still be a bit out but should get some sort of firing from engine. Turn engine by hand again with thumb over number one spark plug hole until you fell pressure, then with somethingsoftish like a pencil feel for the piston reaching TDC on this stroke, fit distributor so that the rotor arm is pointing just before the number one contact on the cap (note rotation of rotor arm) you can turn distributor when sat in engine to get this roughly right, fit leads accordingly 1,3,4,2 fit plugs and give it a go. It should sort of run, will need fine tuning and cam could still be a bit out but will at least give a basic starting pointand its always easier to sort out problems once its running. If engine is very slow to turn over on key with plugs out talk your re-builder. of course it could be just a really bad earth on the engine, try earthing it with a jump lead. Hope this helps and is understandable. easier to do than explain. Regards Derek Quote Link to comment Share on other sites More sharing options...
Nick Moore Posted June 15, 2013 Share Posted June 15, 2013 I had a rebuilt engine that was too tight to crank. Turned out I'd muddled the main caps. :B Quote Link to comment Share on other sites More sharing options...
paulsv8 Posted June 18, 2013 Author Share Posted June 18, 2013 Well guys, good news, the timing was 180 degrees out and now she’s finally running! Just a couple of things to ask. What should be the normal running temp on the water gauge?There’s a slight misfire, checked spark plugs covered in dry, black sooty deposits. Am I right in thinking its over-rich fuel mixture?Finally I really need to get the car seen by a qualified mechanic to fine tune the timing, fuel mixture, and vacuum advance, extra. Can anyone recommend someone in the Hampshire area?CheersPaul Quote Link to comment Share on other sites More sharing options...
Mark Hammond Posted June 18, 2013 Share Posted June 18, 2013 Where in Hants are you M. Quote Link to comment Share on other sites More sharing options...
paulsv8 Posted June 18, 2013 Author Share Posted June 18, 2013 Hi Mark, The car is in Lyndhurst. Quote Link to comment Share on other sites More sharing options...
.thumb.jpeg.b15b81ef10abeea1c3039ae03c4a9f3a.jpeg)
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.