Starting up problem
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As tsumini suggests, the timing may have slipped. Possible if the rotor was hitting the distributor cap posts - it may have hammered the position of the distributor, retarding the timing.
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"Hang on a minute lads....I've got a great idea."
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"Hang on a minute lads....I've got a great idea."
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Until you get a manual on SUs use the information in the PDF document linked below.
https://tecb.eu/onewebmedia/Tuning_SU_Carbs.pdf
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What does the .025 number represent? What are you setting with that number?
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"Hang on a minute lads....I've got a great idea."
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Thank again, Thai
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I had to copy and enlarge your distributor cap picture to see the broken part you are talking about. Get a new cap with matching rotor. Do not re-use either part. Make sure you buy the right cap and rotor for your car. Your '67 would have been built with a 25D or 23D Lucas distributor. However, it could have been swapped out for a 45D distributor. Google for pictures of each and make sure you get the right cap and rotor for what you have.
You said you put in new plugs and the distributor cap looks brand new. Did you perhaps put the distributor cap on 180 degrees out? There is a key on the cap that is supposed to prevent the cap from being installed 180 degrees out. If you try to put the cap on without the key lining up the cap will not sit flat and the rotor can cause the damage shown in your picture. Also, did you remove the spark plug wires one at a time and replace them in the correct firing order?
As was mentioned above by others, the terminology you use describing the problem is important. When you say an engine is not turning over, that suggests to those of us trying to help that the starter is not spinning the engine. You mentioned a burrrr, burrrr, burrr sound when cranking the engine with the starter. That can be from a stuck Bendix unit on the starter motor OR a weak battery. Start with the cheap tests. Put the battery on a low Amp charger over night and see how it sounds the next day.
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Thank you for replying, I test driving three weeks ago after replacing a new radiator and a timing cover with a breather and it ran fine, but a few days ago, it just wouldn't turn over and I flooded it. So I replaced new plugs and set them at .032, .050 like some said on the tube and it did turn over but a rough idle so I flushed out exc. fuel and set them at .025 and still having the same problem. I check the distributor rotor which was dirty so it clean, check the plug wires and has good continuity. looking closely at the distributor cap, their a piece broken on all 4 contact, can you see it?.
Anyway, Thank you for taking the time, Thai
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The ignition system you have is the Crane/Alison optical type with remote amplifier. It is not a stock Mini ignition. The basic system has been on the market for perhaps 30 years. I cannot help you troubleshoot it but I will post some document links below that may help.
Instructions:
https://static.summitracing.com/global/images/instructions/xr700%20instructions.pdf
Troubleshooting Threads:
//www.britishcarforum.com/bcf/showthread.php?73767-Crane-XR700-Installation-Problem
https://www.bmw2002faq.com/forums/topic/26438-coil-wiring-and-crane-xr700-troubleshooting/
The Crane system is a good ignition system when set up properly. However, you will notice there are a lot of threads out there that discuss troubleshooting and problems with it.
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Your distributor cap looks fine to me. The four posts inside are supposed to look like that. The inner sides facing the middle contact are machined to an exact radius so that the rotor just misses them as it turns. The rotor does not quite touch but is close enough for the spark to jump.
You apparently have an electronic ignition system - I am not familiar with that one, so cannot comment on it. All I can suggest is to check all the connections and wires. Hopefully someone who knows about that system can advise.
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"Hang on a minute lads....I've got a great idea."
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Thank you for replaying with such good detail, sorry I can't do the same. So I will try again. I have a standard 1275 A- with twin SU 1.5. I finished installing a new radiator and changing a timing cover with a breather. I took it for a test drive which went great. Three week later, I think is a good day to drive but it just wouldn't turn over, so like you said I flooded the engine, so yesterday I got a new set of plugs and set them at .032, .050 and today I set them at .025 and it did turn over like yesterday but has a rough sound that's before I did what you said which I removed the plug and with a heavy foot I turn the key for 15 second. I check the wires, distributor without a vacuum and the rotor but the cap has a little piece broken off on each four corner, I doesn't look new. I'm going to order a new one but can you see the pics. and recommend if I should replace a new distributor and what kind, with or without a vacuum?. The last pic. is what come with the car 5 yrs. ago.
Thank you very much for your time, Thai
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Found 24 Messages