12-09-2019, 05:21 PM
Flywheel, This is what my Practical Automobile Engineering Illustrated ( An old text book printed when side valve engines like 7s were popular) about starting problems. I have left out starter motor problems as I am assuming there is no problem there.
Starter turns engine briskly but engine does not start.
1. Contacts set wrongly or dirty
2. Seized contact breaker arm
3. Plugs damp or gap needs re setting
4. HT leads leaking badly
5. Loose or faulty Lt wire to coil
6. Damp or faulty condenser
7. Faulty coil
8. Damaged rotor arm
9. Lack of petrol jets and/or filters blocked. Petrol pump defective
10.choke not working correctly and/or leaks in induction system
11.sticking or leaking valve
12.valve or ignition timing incorrect
13.leakage past pistons and cylinders.
Most of these things you have already checked and have found to be correct. Most ignition things can be proven by checking for a good spark at the plugs and if you have then you can say the ignition system is ok. Same for petrol if your plugs are wet through after cranking it over for some time then petrol is getting through. You are then left with timing to check. One last thought how good is your battery it could be that the starter is taking all the power and there is not sufficient left to create a good spark.
John Mason
Starter turns engine briskly but engine does not start.
1. Contacts set wrongly or dirty
2. Seized contact breaker arm
3. Plugs damp or gap needs re setting
4. HT leads leaking badly
5. Loose or faulty Lt wire to coil
6. Damp or faulty condenser
7. Faulty coil
8. Damaged rotor arm
9. Lack of petrol jets and/or filters blocked. Petrol pump defective
10.choke not working correctly and/or leaks in induction system
11.sticking or leaking valve
12.valve or ignition timing incorrect
13.leakage past pistons and cylinders.
Most of these things you have already checked and have found to be correct. Most ignition things can be proven by checking for a good spark at the plugs and if you have then you can say the ignition system is ok. Same for petrol if your plugs are wet through after cranking it over for some time then petrol is getting through. You are then left with timing to check. One last thought how good is your battery it could be that the starter is taking all the power and there is not sufficient left to create a good spark.
John Mason
Would you believe it "Her who must be obeyed" refers to my Ruby as the toy.