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General Category >> Rubber Side Down! >> Hard Starting after Air Filter Change
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Message started by philthymike on 06/12/20 at 16:13:54

Title: Hard Starting after Air Filter Change
Post by philthymike on 06/12/20 at 16:13:54

Last weekend I changed the air filter. Put in the same as what was there. While riding I notice an small increase in acceleration.
But more noticeable is the fact that now it's taking 3 to 4 long stabs at the starter button to get the motor running.
Prior to the filter change the average was like one stab for half a second and good to go.

So what? Bad filter? Need carb adjustment?

Title: Re: Hard Starting after Air Filter Change
Post by justin_o_guy2 on 06/12/20 at 16:30:17

Still got the old filter?
If so,, put it in,,
If not,, just pull the new one,,and let it start,,
Did you do ANYthing else?

Title: Re: Hard Starting after Air Filter Change
Post by philthymike on 06/12/20 at 17:29:19

I chucked the old one. Looked like it had lost the war.
Only other changes were a new turn signal stem and mirrors.

Title: Re: Hard Starting after Air Filter Change
Post by justin_o_guy2 on 06/12/20 at 19:51:16

Then pull the filter..
Who knows,, maybe you stuck a bad one in..

Title: Re: Hard Starting after Air Filter Change
Post by ohiomoto on 06/12/20 at 20:17:51

First, make sure the new philter is properly seated.

If your old philter was philthy, then it would reduce airflow and make your bike run slightly rich compared to a non-philthy philter.

Use the choke to start in cool weather, run a mile or so on half choke to warm up. If the bike is warm or it's hot out, use half-choke or no choke as needed.

If none of this works, look into a carb adjustment.

Title: Re: Hard Starting after Air Filter Change
Post by Dave on 06/13/20 at 03:21:01

Is there any chance you knocked off a vacuum line while working on the bike?

What jetting do you have in the bike? Has the carb ever been cleaned? Do you still have the cover over the sealed idle fuel mixture screw?

I suspect ohiomoto is correct - your old filter was creating a restriction which made the bike get less air and more fuel......which aids starting.

Title: Re: Hard Starting after Air Filter Change
Post by philthymike on 06/13/20 at 17:43:27

Filter is seated. Vac line is good. Even with the choke it's hard starting. If I give it gas while starting it helps. Never used to need that before. Looks like it is running leaner now.

Title: Re: Hard Starting after Air Filter Change
Post by philthymike on 06/14/20 at 12:41:05

I went for a good hard ride this morning. On one highway stretch I noticed something surprising. I've got loads more overtaking power than before and it takes less throttle to maintain 70 than before.
I'm thinking maybe this overall leaner condition is actually better for when the bigger main jet takes over.

Title: Re: Hard Starting after Air Filter Change
Post by Gary_in_NJ on 06/14/20 at 14:55:54

If you can feel a performance gain from cleaning your air filter, it’s time to up your maintenance game. Letting something like that get to the point of where it effects performance is waiting way too long.

Title: Re: Hard Starting after Air Filter Change
Post by justin_o_guy2 on 06/14/20 at 14:57:17

Mile after mile,,
Your bike is groaning out
I cant breathe

Title: Re: Hard Starting after Air Filter Change
Post by philthymike on 06/17/20 at 15:02:44

Hilarious JOG2! ;D

I went and compared my new filter with my neighbors original filter. There's a difference in the filter element materials. Turns out mine isn't actually a Suzuki part but a knockoff sold on Amazon as OEM.
This filter is a fraud.