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**Terrorist** · 06-29-2014, 05:56 PM

Re: Bike is running lean(I guess?) and my mechanic has given up

Okay, so I sprayed water on the air filter to carb, carb to engine and I did not notice any change in RPMs. Just to e sure I checked like 15-20 times and still no changes. So I took it to another mechanic and he removed the carb apart and checked for any leaks in rubber and the rubber was fine. He removed the top portion of carb and told me that the diaphragm rubber is worn out. I am not sure what that is and if its causing my bike to run lean and backfire. Also it costs like around Rs.500/-.

**SparKot** · 06-29-2014, 07:05 PM

Re: Bike is running lean(I guess?) and my mechanic has given up

Originally posted by Terrorist View Post

Okay, so I sprayed water on the air filter to carb, carb to engine and I did not notice any change in RPMs. Just to e sure I checked like 15-20 times and still no changes. So I took it to another mechanic and he removed the carb apart and checked for any leaks in rubber and the rubber was fine. He removed the top portion of carb and told me that the diaphragm rubber is worn out. I am not sure what that is and if its causing my bike to run lean and backfire. Also it costs like around Rs.500/-.

Please do share photos of worn-out diaphragm & new one when you go for replacement.

Did you take any photos of worn-out diaphragm or any kind while he was working on your bike?

**kusmaker** · 06-29-2014, 07:42 PM

Re: Bike is running lean(I guess?) and my mechanic has given up

Originally posted by Terrorist View Post

Okay, so I sprayed water on the air filter to carb, carb to engine and I did not notice any change in RPMs. Just to e sure I checked like 15-20 times and still no changes. So I took it to another mechanic and he removed the carb apart and checked for any leaks in rubber and the rubber was fine. He removed the top portion of carb and told me that the diaphragm rubber is worn out. I am not sure what that is and if its causing my bike to run lean and backfire. Also it costs like around Rs.500/-.

Incorrect adjustments in a carburetor can have multiple symptoms like
1.Poor performance.
2.Rough sound from the clutch.
3.Erractic accelaration.
4.Poor fuel economy
5.Misfiring or backfiring.

The accelarator pump uses a rubber (diaphragam) or rubber cap on the piston to infuse fuel through nozzle if the diaphragan is damaged it will not be able to send proper amount of fuel to be mixed with the incoming air, or if the discharge nozzle is plugged with dirt of fuel varnish deposit, it can restrict fuel flow,

**thefalcon** · 06-29-2014, 09:18 PM

Re: Suzuki GS150R : Drain Plug - Thread Loss

Originally posted by SparKot View Post

Nothing to worry, get the Strainer-Plate changed, not sure about the name though. It's cheaper than the Bolt.

If interested, you can invest in proper tools

If threads on Bolt are intact, you can save a lot of money by just replacing that Plate:
[ATTACH=CONFIG]148854[/ATTACH]

Scary, be careful.

Thanks for the pic. Exactly what i was looking for.

I do have a chrome vanadium spanner set.
But the size started at 10, and these 3 screws needed a size 8.

The threads on the bolt look proper luckily.

The plastic cover idea does sound scary (and a few drops of oil are still leaking occasionally), but since the service center is 3 km from my house, i'm taking a chance.

Phew, this is a relief. Some people were saying the bottom part of crank case might have to be replaced. That would have been an expensive affair.

**SparKot** · 06-30-2014, 04:35 AM

Re: Suzuki GS150R : Taparia Hand Tools PriceList 2013

For those who are interested in hand tools check out Taparia price catalogue (2013).

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http://www.tapariatools.com/pdf/price_list_2013.pdf

NOTE: These are MRP rates, you're entitled to bargain on it with the retailer.

e.g. Ratchet has MRP 715/- I got it for 600/- by skipping cash-bill.

Edit:
Download all specification docs of Taparia hand tools:

http://www.tapariatools.com/downloads.php

**Terrorist** · 06-30-2014, 08:47 AM

Re: Bike is running lean(I guess?) and my mechanic has given up

Originally posted by SparKot View Post

Please do share photos of worn-out diaphragm & new one when you go for replacement.

Did you take any photos of worn-out diaphragm or any kind while he was working on your bike?

No I could not take a pic of the worn out diaphragm. But, when I go for replacement, I will click a pic of both the diaphragms and share them.

----consecutive posts auto-merged-----

Originally posted by kusmaker View Post

Incorrect adjustments in a carburetor can have multiple symptoms like
1.Poor performance.
2.Rough sound from the clutch.
3.Erractic accelaration.
4.Poor fuel economy
5.Misfiring or backfiring.

The accelarator pump uses a rubber (diaphragam) or rubber cap on the piston to infuse fuel through nozzle if the diaphragan is damaged it will not be able to send proper amount of fuel to be mixed with the incoming air, or if the discharge nozzle is plugged with dirt of fuel varnish deposit, it can restrict fuel flow,

Can I use a diaphragm of FZ16's carburetor since even that has a Mikuni BS26 Carburetor, in case I do not get it at the Suzuki ASC?

**srikany** · 06-30-2014, 11:11 AM

Re: Bike is running lean(I guess?) and my mechanic has given up

Originally posted by Terrorist View Post

No I could not take a pic of the worn out diaphragm. But, when I go for replacement, I will click a pic of both the diaphragms and share them.

----consecutive posts auto-merged-----

Can I use a diaphragm of FZ16's carburetor since even that has a Mikuni BS26 Carburetor, in case I do not get it at the Suzuki ASC?

One word of caution though, Please always insist on the old spare to be given to you and changed in front of your eyes. Whatever the new spare package may say, still there are some incompatible spares for the same series of vehicles, and you might have a life saver in the old spare so that you can atleast limp around if the new part is not compatible. Also showing the spare gives the dealer a better idea and seldom go wrong in giving you the correct part.

**kusmaker** · 06-30-2014, 12:02 PM

Re: Bike is running lean(I guess?) and my mechanic has given up

Originally posted by Terrorist View Post

No I could not take a pic of the worn out diaphragm. But, when I go for replacement, I will click a pic of both the diaphragms and share them.

----consecutive posts auto-merged-----

Can I use a diaphragm of FZ16's carburetor since even that has a Mikuni BS26 Carburetor, in case I do not get it at the Suzuki ASC?

Yeah i think you can use the diaphragm of fz also, almost all of the two wheeler manufacturers are sourcing parts from the same vendor so interchangeable of the part should not be a problem, but still check befor you use it.Aren't you getting this part at suzuki ASC.

**Terrorist** · 07-01-2014, 09:01 AM

Re: Bike is running lean(I guess?) and my mechanic has given up

Originally posted by kusmaker View Post

Yeah i think you can use the diaphragm of fz also, almost all of the two wheeler manufacturers are sourcing parts from the same vendor so interchangeable of the part should not be a problem, but still check befor you use it.Aren't you getting this part at suzuki ASC.

I finally got hold of that diaphragm rubber after calling up like around 20 numbers. I got it at Value Suzuki in Vasanth Nagar. Even after replacing, same problem. It misfires.
A google search lead me to Mikuni's website where it's written that misfiring is normal on HIGH PERFORMANCE exhaust systems.
Mikuni American Corporation
I am now leaning towards exhaust leak. I will try talking to the ASC guy today to check with a spare exhaust and see if the problem persists. Even if that doesn't solve the problem, I am giving up.

**kusmaker** · 07-01-2014, 09:18 AM

Re: Bike is running lean(I guess?) and my mechanic has given up

Originally posted by Terrorist View Post

I finally got hold of that diaphragm rubber after calling up like around 20 numbers. I got it at Value Suzuki in Vasanth Nagar. Even after replacing, same problem. It misfires.
A google search lead me to Mikuni's website where it's written that misfiring is normal on HIGH PERFORMANCE exhaust systems.
Mikuni American Corporation
I am now leaning towards exhaust leak. I will try talking to the ASC guy today to check with a spare exhaust and see if the problem persists. Even if that doesn't solve the problem, I am giving up.

Misfire can occur due to number of reason.

faulty spark plug.
incorrect valve timing.
incorrect A/F ratio.
blocked main jet.
air leak in inlet manifold.

Your bike is not a high performance motorcycle and so is the exhaust, just place your hand near the exhaust where it attaches to the cylinder and twist the throttle, you will instantly know if your exhaust is leaking, and don't give up till the problem is solved.

**SparKot** · 07-01-2014, 10:36 AM

Re: Suzuki GS150R

Originally posted by Terrorist View Post

I finally got hold of that diaphragm rubber after calling up like around 20 numbers. I got it at Value Suzuki in Vasanth Nagar. Even after replacing, same problem. It misfires.

So no photos of worn-out diaphragm for future references.

Originally posted by Terrorist View Post

A google search lead me to Mikuni's website where it's written that misfiring is normal on HIGH PERFORMANCE exhaust systems.
Mikuni American Corporation

So, backfiring is common on closing throttle. Is PAIR[SAI] system considered in the above backfire analysis?

Originally posted by Terrorist View Post

I am now leaning towards exhaust leak. I will try talking to the ASC guy today to check with a spare exhaust and see if the problem persists. Even if that doesn't solve the problem, I am giving up.

I like the spirit towards fixing the issue. Recently I was chasing inconsistent lower RPMs, had to clean pilot & choke circuits to fix it.

I still hear "cloth fluttering" sound on closing throttle; somehow it doesn't bother me now.

Originally posted by kusmaker View Post

...
and don't give up till the problem is solved.

+1
It's claimed Catalytic-Convertor is pretty much useless after couple of years of operation as it will be buried in soot. Any solution for this?

**chief ashman** · 07-01-2014, 04:08 PM

Re: Suzuki GS150R

I read that dismanteling the Cat-Con and giving it an overnight soap water bath is the only (and cheapest) method of cleaning up the soot.

**kusmaker** · 07-01-2014, 05:42 PM

Re: Suzuki GS150R

some catalytic cleaners are available for this purpose but how good they are that's the question catalytic converters are not cleaned they are simply replaced and to replace them you have to change whole of the exhaust pipe.

**SparKot** · 07-01-2014, 06:47 PM

Re: Suzuki GS150R

Bought:
NGK CPR7HSA spark-plug : 100/-
NGK CPR6HGP spark-plug : 150/- for Access125
Mileage Test Can : 130/-
100ml Measuring Jar(Beaker) : 15/-

[MENTION=70413]metalmaniac[/MENTION] the mileage test can

Originally posted by chief ashman View Post

I read that dismanteling the Cat-Con and giving it an overnight soap water bath is the only (and cheapest) method of cleaning up the soot.

Drying the cat-con will be head-ache; anybody here on xBHP done it so far?

Originally posted by kusmaker View Post

some catalytic cleaners are available for this purpose but how good they are that's the question catalytic converters are not cleaned they are simply replaced and to replace them you have to change whole of the exhaust pipe.

Replacing the whole muffler/silencer/exhaust-pipe will turn out to be an expensive affair; over 4,000/- for GS150R. However, it makes sense if one is serious.
[MENTION=28527]sibun[/MENTION] any comments on cleaning cat-con ?

**deemash** · 07-01-2014, 07:01 PM

Re: Suzuki GS150R

Hi Guys, I travel a distance of 70kms (up n down). I need mileage (>45 kmpl at least), good comfort with minimal back pains and niggle freee ride.
And after thinking and getting confused so much I shortlisted:
1. new xtreme (2014) - reviews and updates not much not seen on roads too
2. Suzuki GS - lot of lovers for this bike (but few queries as below)
3. Honda Trigger - Honda people are too rude and not worth the money spent
4. Pulser 180

But the below problems are stopping me buying the GS:
1. I have seen some GS, the color fades so fast. Especially I have seen the Grey colored ones. They look ugly after the fade.
2. No DC. My ride involves night travel, so I am worried about the lighting of this bike
3. No tubeless. I feel tubeless is a must these days to avoid flat tyres as much as possible.

Trigger is out. 1, 2 and 4 remains in my mind and somehow after reading the reviews my brain says to go with the GS.

Kindly let me know the good bike.

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Suzuki GS150R

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