bobber project! stopped in my tracks

**derekp** · 02-23-2011, 07:54 PM

**PS this was happening Before i replaced the air box with pod filters!!**

**FreshStart** · 02-23-2011, 07:56 PM

welcome, wheres the pictures, i love to see bobbers as i build them too

**Dave8338** · 02-23-2011, 08:01 PM

Welcome to the GSR!!!

You are suffering from a lean condition which, may have several sources. First and most obvious, you introduction of the pod air filters. As you noted, you read up on the jets so...I won't bring that up again (though others will)

.

How are the intake boots between the carbs and the head? You DO NOT have the intake o-rings so boot condition is most important.

What are you running for exhaust?

How did you "clean" the carbs?

Cliff will be along shortly with his nifty links and site, so hold on tight.

I'll leave you with these questions so as not to "beat a dead horse"...

**Steve** · 02-23-2011, 08:17 PM

I'm not going to bring up the topic of jetting either, but I will have to ask:

You say you "cleaned the carbs out". How? Did you:
- strip them down COMPLETELY
- dip them in Berryman's Carb Cleaner Dip (for a day each)
- put them back together with fresh o-rings from cycleorings.com
- install new o-rings on the intake boots
- synchronize your carbs

You say you have been "checking out this forum religiously", so you should have picked up on those points. Leaving crud in the carbs will affect fuel delivery, which is, essentially jetting.

You have also installed pod filters, which will lean out the mixture.

You have definitely hit the right diagnosis: "if anything its too lean".
The trick now is to find out which of several possible culprits is causing your lean condition, but we won't bring up JETTING.

.

**Nessism** · 02-23-2011, 08:21 PM

I wish we could get a sticky in this forum about the need to rejet when installing pods. Would save a bunch of time.

**derekp** · 02-23-2011, 08:42 PM

thanks for the quick replies everyone.

haha ive been waiting on my "super big welcome" or something along those lines. but i already have the link from another post on my desktop!

ya carbs have been stripped to the bone and thoroughly cleaned.

i still have the stock exhaust
and the engine runs super clean when at an idle or a slow but steady acceleration.
the problem also persists with the pod filters off completely

please remember that this problem occurred with the original air box! and yes the filter was clean! so PLEASE PLEASE PLEASE NO REJET COMMENTS!

i am prepared to do the rejet, but just looking for some hopeful hints of something else that that may be the problem

**FreshStart** · 02-23-2011, 08:50 PM

besides the obvious (jetting) a jammed up petcock or vacuum line can cause poor fuel flow causing it to run lean.

**BassCliff** · 02-23-2011, 08:52 PM

Greetings and Salutations!!

Hi Mr. derekp,

I won't say a word about shimming the needles, re-jetting, air intake system leaks, or proper air restriction either. I'll just share some GS lovin'.

I just stopped by to welcome you to the forum in my own, special way.

If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....

Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", "Top 15 Tips For GS Happiness", the Carb Rebuild Series, and the Stator Papers. Now let me roll out the welcome mat for you...

Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike!

Thanks for joining us. Keep us informed.

Thank you for your indulgence,

BassCliff

**Nessism** · 02-23-2011, 08:56 PM

Did anyone say rejet yet?

**Steve** · 02-23-2011, 09:00 PM

OK, no more rejet comments, even though that is apparently what it's going to take to fix your bike.

One other thing to note, your bike will run worst of all if you have NOTHING on the intake of the carbs. With velocity stacks and proper jetting, they could be made to run well for racing, but weren't always so practical on the street. Pod filters, like you have installed, allow more air to flow. Somewhere along the line, before that air gets into the combustion chamber, it has to have more fuel added than normal, and that requires jetting the carbs a bit richer.

One other item that will affect the mixture actually happens after the carbs, so it will not require any change in jetting. That would be the intake tubes between the carbs and the cylinder head. Did you change them? Since you had this problem before ditching the airbox, it's a good possibility that they have not yet healed themselves.

.

**Steve** · 02-23-2011, 09:01 PM

Originally posted by Nessism

Did anyone say rejet yet?

Yeah, it's been said (a time or three), but he doesn't want to hear it.

.

**derekp** · 02-23-2011, 09:19 PM

sorry guys. not meaning to come across as stubborn about the whole rejet thing. i would just like to hear some alternate ideas.

believe me ive read through the forums and when anyone has the same sort of question about the air/fuel mixture it results in immediate spamming about rejetting with no conclusion.

but since this problem occured with the stock airbox..........

maybe someone else has had the same problem

**FreshStart** · 02-23-2011, 09:25 PM

i know someone already said this but intake boots, are they solid, how are the o rings? another reason to run lean

**Steve** · 02-23-2011, 09:45 PM

Originally posted by FreshStart

i know someone already said this but intake boots, are they solid, how are the o rings? another reason to run lean

It was brought up in post #4 that his bike does not have o-rings at the boots.

There are only sleeves from the carbs to the all-metal castings on the cylinder head.

.

bobber project! stopped in my tracks

bobber project! stopped in my tracks

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