mag drop

by Robert Musgrave in 912 / 914 Technical Questions 11 years ago

I have a bad mag drop on 912ULS, and FAQ suggests using the Ignition Troubleshooting Guide. Trouble is I cannot seem to locate this guide? Where would I find it?
Regards Robert :(

Re: mag drop

by jan kerstens » 11 years ago

jan kerstens

34 131 5

Robert,

Did you clean the carbs recently?

Jan

Report
Re: mag drop

by Robert Musgrave » 11 years ago

Robert Musgrave

5 3 0

No I haven't but definetly worth considering.
Thanks,
Cheers Robert B)

Report
Re: mag drop

by Roger Lee » 11 years ago

Roger Lee

128 5.28k 4.98k

Are the A&B ignition drops equal and how big a drop are we talking about and at what rpm is the mag check done?

Mag drops are affected by plug gap (too wide or too narrow), bad connection with the plug boot and ignition wire, grounding issues, thermal paste on the plug electrode, Loose plug, cap not on the plug tip tightly, poor connection up at the ignition modules. The carbs may be involved, but I would check the electrics first. These are the most common and where I would start my inspection.

Roger Lee
LSRM-A & Rotax Instructor & Rotax IRC
Tucson, AZ Ryan Airfield (KRYN)
520-349-7056 Cell

Report
Re: mag drop

by jan kerstens » 11 years ago

jan kerstens

34 131 5

Roger is right. Check the ignition system first.

Some time ago I had a bad mag drop when I cleaned the carbs by mild pressurized air and thereby dislodging the membranes in the carbs. Just my 2 cents.

Report

You do not have permissions to reply to this topic.

Title	Category	Replies
912is rpm drop	912iS Technical Questions	22
RPM Drop in 912ULS	912 / 914 Technical Questions	3
RPM Drop in 912ULS	912 / 914 Technical Questions	21
Damaged ECU casing	912iS Technical Questions	8
Fuel pump pressure drop	912iS Technical Questions	15

mag drop

Recent Videos

Safety First!

Prize Giveaway!

Log In/Out

Login