electronic ignition question

[AWSpoofwil]

Hey my 78 620 and it recently started missing really bad. So bad in fact I found fuel in the air intake from the carburator not being able to process it because of the one missing cylinder. So my dad and I thought there could be moisture in the distributor cap ( there is none) or maybe the spark plugs are bad.. anyways we were wondering what the spacing is supposed to be between the 4 lobed spindle rotor and the magnetic pickup trigger. Thoughts, ideas, answers?

[banzai510(hainz)]

if you thing a cylinder is bad

 

pull a spark plug wire. the wire that has no change is the bad one.

then ck the  spark plug and the lash pad on that cylinder if it fell out.

[ggzilla]

The spacing on the distributor reluctor & pickup won't cause missing on one cylinder. It is supposed to be 8-16 thousands inch.

 

To find out why it is missing, start with a compression test to rule out a non-fixalble problem.

 

Next, pull the spark plug wires out of the cap (one at a time) to look for a corroded terminal. If you find one, measure the resistance of that wire. If it is over 1000 ohms per foot, replace it.

[AWSpoofwil]

Thanx everyone! My dad and I swapped all of the spark plugs and it worked! But i do have one more concern.. and its not realty electrical, but when I really stomp on the gas (even if I'm stopped and in neutral) it takes a quarter of a second to really spool up. Like the throttle lag is immense.. any way to keep the decent fuel economy but still fix this problem?

[ggzilla]

Good to hear.

 

Hesitation is what it is called when the engine does not respond to the throttle immediately.

 

It is normally caused by vacuum leak or by accelerator pump trouble. Read the above posts.

[AWSpoofwil]

Ok thank you!