Bogging down when revving

[Guysim]

I have recently replaced the coil , dizzy , fuel filter and plugs , got the car running well. Yesterday it started bogging down when you accelerate to the point it stalls.

Plugs were black so cleaned them and was slightly better.

Any ideas , too much fuel? Not enough?

 

[André4Renaults]

Either too much fuel or the correct amount of fuel not being burnt properly. You didn't mention changing the condenser, which, were it to fail, would produce the symptoms you describe, particularly ignition failure under load.

 

[Guysim]

Either too much fuel or the correct amount of fuel not being burnt properly. You didn't mention changing the condenser, which, were it to fail, would produce the symptoms you describe, particularly ignition failure under load.

I did change the condenser yes and the points. Gap incorrect? Would that cause symptoms?

If too much fuel - are we thinking jets in carb?

 

[André4Renaults]

I did change the condenser yes and the points. Gap incorrect? Would that cause symptoms?

If too much fuel - are we thinking jets in carb?

Yes, incorrectly gapped points would cause similar symptoms. The best way to set them is by using the dwell angle measurement. This is a measure of the angle (usually expressed as an angle, but sometimes as a percentage) that the points remain closed in the cycle. If you know this reading and have a dwell meter this allows you to set the points gap extremely accurately, although it can be time consuming! The numbers are confusing, too: if your dwell angle reading is too high you need to increase the gap, and vice versa. Remember, whenever you adjust or change the points gap you must re-set the timing, since by altering the points gap you have altered the point (excuse the pun!) at which the points will open, so the timing needs to be re-set.
Good luck! More help or explanation if you need it!

 

[Guysim]

Yes, incorrectly gapped points would cause similar symptoms. The best way to set them is by using the dwell angle measurement. This is a measure of the angle (usually expressed as an angle, but sometimes as a percentage) that the points remain closed in the cycle. If you know this reading and have a dwell meter this allows you to set the points gap extremely accurately, although it can be time consuming! The numbers are confusing, too: if your dwell angle reading is too high you need to increase the gap, and vice versa. Remember, whenever you adjust or change the points gap you must re-set the timing, since by altering the points gap you have altered the point (excuse the pun!) at which the points will open, so the timing needs to be re-set.
Good luck! More help or explanation if you need it!

Checked point gap and all good - thinking maybe fuel air mixture screw?

 

[André4Renaults]

If the ignition system's OK then it must be the mixture. Try weakening it off a little and cleaning the jets.