Steve P Posted February 26, 2023 Report Share Posted February 26, 2023 21 hours ago, Pete Lewis said: once its all cleared it idles and revs free nicely but under any load kaput cough splutter wheeze die Sounds exactly like my Herald on the 2014 RBRR, we found the cause was the small fuel link pipe under the rear of the chassis pulling in air, replaced at stupid o clock in a layby near Aberdeen using just a scissor jack. Fine after that. Steve Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 26, 2023 Author Report Share Posted February 26, 2023 had this from one of the grtty pipes at the pump will add the rear one to the hate list Ta ! Pete Link to comment Share on other sites More sharing options...
foshi Posted February 27, 2023 Report Share Posted February 27, 2023 pete you have properly already eliminated this rotor arm not fitting tightly had it on my vitesse would start up rough then run but underload would run like on 2 pots paul Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 28, 2023 Author Report Share Posted February 28, 2023 the rotor arm and trigger wheel are a very tight fit i might suggest rimmer are doing a good deal on a 1500 lucas OE dizzy (no tacho drive ) but new OE at £54 might be a way forwards but a re run with the slave is back on the test run this week to have a 123 and accu and replaced module fail is not good for the "really" mode but its looking like she goes fine in 50yr old but something leccy is a No No more later this week anyone got some matches Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 3, 2023 Author Report Share Posted March 3, 2023 well with holed emission diaphragm bent needle stretched air piston spring a duff 123 a duff accuspark an replacement pump with7psi !!!!! tight tappets R suffix spark plugs ignition switch crank intermitent to days final was get rid of the cloudy fuel and Off she Goes we had suspected fuel from earlier but its cold and drizzle its not something you rush into but when you begin to doubt your own magic fingers you start to go a bit Grrr!!! and dream of hot soup and a duvet but all that remains now is drain out 4 gallons of cloudy and replace with something ....clearer Pete 1 Link to comment Share on other sites More sharing options...
Steve P Posted March 3, 2023 Report Share Posted March 3, 2023 Hope all your time and effort is appreciated Pete.👍 S Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 3, 2023 Author Report Share Posted March 3, 2023 yes , no recompense for the miles but happy we have the blasted thing going so much to resolve and whatever you find doesnt solve much. its been a marathon mess to sort and you start to puzzle at your own values , question what gorilla or muppet has been before and at risk repeating yourself as doubts start to rumble in . and cold and damp doesnt help old bodies if it continues to play dead after a float chamber drive we will do a runner none of this makes much sense but anyone wants half a tank of cloudy fuel let me know Pete Link to comment Share on other sites More sharing options...
PeteH Posted March 3, 2023 Report Share Posted March 3, 2023 Worth having the "cloudy" Fuel tested?. Not the first time that water and or other fluids have found their way into filling station tanks. There was a Case up here in Yorkshire where "they" manged to fill a Petrol Storage Tank with diesel by mistake. Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 3, 2023 Author Report Share Posted March 3, 2023 as it had run ok on half of a full tank before it stopped with a dizzy fault i wonder if some muppet has added something its not locked and out on the drive . first questioned the fuel as its was cloudy but with all the other things going on you tend to discount bright ideas there is a lesson in volunteering for the unkown then find youre in the pit with no escape funnily another local has a spitty up for sale (was in courier ) cant start it, popped over and he had the HT leads all mixed up and he has dementia well on the way a quick swop the leads to resemble the firing order and moving the 40 deg advance and she runs like a dream with his lack of memory and a misguided friend had cocked it up but so easy to fix is satisfying Pete 2 1 Link to comment Share on other sites More sharing options...
PeteH Posted March 4, 2023 Report Share Posted March 4, 2023 Pete. Sad to hear, One can only hope he gets good care now. Dementia and Alzheimer’s are two of the worst conditions of Ageing, I would argue even worse than a Cancer?, In my view. One of the saddest in recent times was a local lady, a friend of my wife, who, in her 80`s, had severe memory loss. Same lady had been one of the Bletchley Park Team, and a Mathematician. She worked with Allan Turing during WW2. No one local knew until about 15 years ago, not even her second husband. Pete Link to comment Share on other sites More sharing options...
Steve P Posted March 4, 2023 Report Share Posted March 4, 2023 21 hours ago, Pete Lewis said: i wonder if some muppet has added something its not locked and out on the drive . Was it Yellow?. S Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 4, 2023 Author Report Share Posted March 4, 2023 ha the cars is rattle can green............ the fuel is clear but cloudy just does not look like petrol very different to the can of replacement stuff Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 6, 2023 Author Report Share Posted March 6, 2023 fuel has been drained and whats in the carbs is cloudy /watery whats in the tank drain is looking fine a nice hint of golden colour refilled and once more drives off like a loony and after 500 yds splutters to a dead halt and wont restart John and myself are now at the verge of insanity there is nothing else to do all the wrongs have been righted but there is this ritual va va room followed quickly by complete kaput it up for sale anyone fancy a Mk3 in rattle can green surpisingly rust free in most places but needs a lot of TLC to return it to a nice little car it needs a lot of oiling cleaning , glass channels and such all doable if you have the inclination and a re spray was a daily driver till all this started and lack of maintenance over the years followed by some heavy handed misguided garage work Pete Link to comment Share on other sites More sharing options...
Nick Jones Posted March 10, 2023 Report Share Posted March 10, 2023 What sort of voltage is the charging system putting out? Old Lucas alternators (and dynamo/regulators) sometimes put out rather high voltages and/or spikes. This tends to kill modern electronics quite quickly, though points systems usually cope unless it spike high enough to pop the condenser. Coming from a different angle, EI systems put higher voltages into the HT systems making “leaks” from places like the rotor arm, cap and HT leads more likely. If the fuel is murky are there any slimy biological masses in the tank that might be wandering around and randomly blocking the outlet? Link to comment Share on other sites More sharing options...
John Harris Posted March 10, 2023 Report Share Posted March 10, 2023 I have had a 123 dizzy in cars for the last 15 years or so, in a Spitfire and MGB GT V8. I have had one failure when an alternator diode failed and put nearly 20v across the dizzy. The failed dizzy was replaced by Southern Carbs. I have had no coil failure from them.The alternator on the Spitfire and MGB put out about 13 v when running. Problems I have seen in other cars fitted with them have arisen from two problems - poor spade connector connections on the low tension side leading to intermittent firing - this is the fault of the installer, and secondly poor fitting of the ignition leads, particularly the coil lead not pushed home enough either on the coil or dizzy cap. If all of the above are ok the only other problem I have seen is incorrect initial timing with the green light coming on at TDC or the advance at idle in the program being set incorrectly ( sometimes in combination with the vacuum advance settings ). If it is a 123 dizzy with 16 pre set curves then in most cases the car will start which ever program is selected as long as the initial timing is ok, obviously it might not run well through the revs if the incorrect pre set program is used, but it will run. If fitted correctly and there is a spark at the plugs but it is not firing, or fires then fails, then it has always been a fuel/carb problem. I have used them with standard coils, sports coils and flame throwers. The MGB is used extensively on track days and European trips, so no shortage of vibration and heat cycles. The Spitfire recently went to the South of France. Happy to come and have a look if it helps. Link to comment Share on other sites More sharing options...
PeteH Posted March 11, 2023 Report Share Posted March 11, 2023 The possibility of bacterial contamination is there. Many years ago marine fuel had a spate of issues caused by bacterial growth, feeding on the fuel and causing degradation of quality as well as filter blockages and other issues. Had the vehicle been standing in the heat of last summer? One of the known accelerants of growth was put down to storing fuel for long periods in heated tanks?. In the case above it took A bacterial clean of the tankage to remove the regrowth. I fully appreciate that we where dealing with a heavier fuel. But petrol comes from the same feedstocks. Pete Link to comment Share on other sites More sharing options...
Puglet1 Posted March 11, 2023 Report Share Posted March 11, 2023 1 hour ago, PeteH said: The possibility of bacterial contamination is there. Many years ago marine fuel had a spate of issues caused by bacterial growth, feeding on the fuel and causing degradation of quality as well as filter blockages and other issues. Had the vehicle been standing in the heat of last summer? One of the known accelerants of growth was put down to storing fuel for long periods in heated tanks?. In the case above it took A bacterial clean of the tankage to remove the regrowth. I fully appreciate that we where dealing with a heavier fuel. But petrol comes from the same feedstocks. Pete I guess one of the ways to eliminate this would be to run some fuel from a dummy fuel tank directly to the fuel pump. Many years ago I had a car that demonstrated a similar symptom to the one that you’re experiencing and it was caused by the air release hole in the fuel cap being blocked and creating a vacuum in the fuel supply. Alternatively, to eliminate the vacuum theory, you could just loosen the filler cap before your test drive? Pete S. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 11, 2023 Author Report Share Posted March 11, 2023 we have backed off this nightmare i have thrown all our experience at it an we have drawn a blank so many other things were wrong but none has solved the stopping ...makes no sense , there is no silly imobiliser fitted to add to the chaos the replacement accuspark unit does work ok sparks the strobe on all 4 plug leads the 123 had a permanent black to earth so no coil trigger at all , whatever you did with it its about 2 yrs old doesnt show any signs of programable but does have the green led. alternator is quite new and battery when idling is 14,5v blown the fule system out , tank is venting and cap seal is vented fuel runs by gravity easily to the pump inlet fuelin tank is nice colour fuel at carbs is cloudy all drained and refuelled wich again worked well for 500 yds and stops of all the cars i have returned to life this one has been so cantankerous its lacking TLC but all the basics are iin place now to say ive given up is against my reputation but this one has worn me/us down and its 20 miles away to add to the 5 visit costs (now totted up 200 miles ) the enthusiasm to volunteer has dwindled appreciate the sugestions but we have coverd every concievable cock up and exception to get us knowhere it will be something daft ... Pete Link to comment Share on other sites More sharing options...
Stratton Jimmer Posted March 13, 2023 Report Share Posted March 13, 2023 On 11/03/2023 at 06:01, PeteH said: The possibility of bacterial contamination is there. Aircraft fuel tanks are particularly prone to bacterial contamination and in order to prevent this, radioactive 'slugs' are mounted in the tanks. Link to comment Share on other sites More sharing options...
Wagger Posted March 13, 2023 Report Share Posted March 13, 2023 You have, probably, already tried converting (temporarily) back to points operated ignition. (as built). I always do that if I suspect faults with electronic igntion. Did this on a Morris Minor and the fault recurred even off the points. Had me going for ages until I discovered that the points were sticking 'Open' when everything warmed up. Link to comment Share on other sites More sharing options...
Pete Lewis Posted March 13, 2023 Author Report Share Posted March 13, 2023 we did use a slave points dizzy very early on which worked and proved the 123 and accu. were problematic but whilst it ran and revved fully it was not driven on the destined to fail test route so many other things were just wrong and you live in hope everything you find will help ....NO Pete Link to comment Share on other sites More sharing options...
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