All of a sudden poor mileage

[rotcart]

I have had three Tri Glides to date and I am currently driving a 2016 Tri Glide, during all that time when I filled the bike up the estimated mileage has always been in the neighbourhood of 320 kms (200 miles) per tank. I was on a ride this weekend and the estimated mileage dropped to 244 kms (151 miles). At first I thought the estimation was wrong but after three (3) tanks of fuel it was clear that my mileage per tank had gone for a dump. Can anyone suggest to me why this would have happened or more importantly what the cause could be.

 

[MikeyTX]

Bad gas ? Clogged air filter ? Bad plug(s) ? Combination of .......... ? I've seen a tank of bad gas destroy spark plugs real fast.

 

[Lee H. Mann]

Bad gas ? Clogged air filter ? Bad plug(s) ? Combination of .......... ? I've seen a tank of bad gas destroy spark plugs real fast.

All the above .... E 15 gasoline will cause a drop in mileage by 10-20% too..........

Engaged parking brake too............

 

[rhino 2]

I have to ask, Have you done or changed/added anything to the Trike recently.:Shrug:

 

[Bikerbozo]

How has the wind been lately? High winds cut the mileage big time.

 

[trikermutha]

How cold is it in your area?

 

[MikeyTX]

All the above .... E 15 gasoline will cause a drop in mileage by 10-20% too..........

Engaged parking brake too............

Why would anyone put that in a trike ?

 

[DK Custom Products]

Could be a variety of causes to the drop in MPG, many already mentioned. If it is not throwing any codes, it is going to be a process of elimination. Plug wires are another variable that should be in the list of things to check. As should sensors in the throttle body.

Kevin