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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Engine stumbles at high revs/rpms /cgi-bin/YaBB.pl?num=1279910623 Message started by running-it-stock on 07/23/10 at 11:43:43 |
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Title: Engine stumbles at high revs/rpms Post by running-it-stock on 07/23/10 at 11:43:43 I just got a 2007 S40 with less than 5k miles and it stumbles at high revs on all gears. For example when I am in 4th gear and rev it past 1/2 throttle it stumbles and won't accelerate or maintain speed until I let off the throttle. (does it in all gears) (By shifting up whenever it starts to stumble in the previous gear I can only get to 60-65mph) Everything is still stock. I checked the to see if there was bad gas in the carb by letting some fuel drain from the carb bowl and the fuel was good. Does anybody know what could be causing this? |
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Title: Re: Engine stumbles at high revs/rpms Post by weracerc on 07/23/10 at 11:56:31 i use a box end wrench 17mm or 14mm on the oil plug depending on the year - my 96 is a 17mm.....the carb guru's will have to answer the stumble issue. |
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Title: Re: Engine stumbles at high revs/rpms Post by jsarsfield on 07/23/10 at 12:47:11 Could be something plugging your main jet either clean the carb or run some Seafoam through it. |
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Title: Re: Engine stumbles at high revs/rpms Post by Phelonius on 07/23/10 at 15:27:49 Fer christs' sake it is a Savage! It ain't supposed to do high RPM. Phelonius |
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Title: Re: Engine stumbles at high revs/rpms Post by verslagen1 on 07/23/10 at 16:18:58 534A584B4A5F505C555D390 wrote:
+1 clean/seafoam the carb 1st check what size jet it is while you're in there. |
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Title: Re: Engine stumbles at high revs/rpms Post by Routy on 07/24/10 at 05:13:54 Did you try it w/ the valve to "prime" ? |
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Title: Re: Engine stumbles at high revs/rpms Post by running-it-stock on 07/24/10 at 20:29:16 445740415E5355575C03320 wrote:
+1 clean/seafoam the carb 1st check what size jet it is while you're in there.[/quote] While I am cleaning the carb should I install a jet kit from 6-sigmaracing or the KEYSTER CARB KIT. (found both on ebay) http://cgi.ebay.com/ebaymotors/00-09-Suzuki-Savage-LS650-S40-Carburetor-Carb-Jet-Kit-_W0QQcmdZViewItemQQhashZitem35aa733392QQitemZ230492943250QQptZMotorcyclesQ5fPartsQ5fAccessories http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&_trksid=p4340.m748&item=220635625254&viewitem=&_trkparms=clkid%3D6883316257538297753 Has anyone tried either of these? Will a jet kit eliminate backfiring/ increase hp, and will I also have to change the muffler, or can I rejet and stay with the stock muffler? I don't have any seafoam, but I did try some Berryman. |
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Title: Re: Engine stumbles at high revs/rpms Post by jsarsfield on 07/24/10 at 21:38:52 Quote:
I personally wouldn't but any jets from that seller give our very own Lancer a pm if your looking for jets but I still think your a bit premature on your list of things to do ..... Do you know if your running rich or lean? First thing your should be doing is cleaning your carb the old fashioned way and taking a look at the jets that are already in it the number is stamped on the jets. Also buy some seafoam it is tried tested and the stuff can work but IMHO you should be taking the carb off the bike and give it a 'real' cleaning. Also check to see if your air filter is clean. |
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Title: Re: Engine stumbles at high revs/rpms Post by LANCER on 07/25/10 at 03:17:27 yep yep .... run the seafoam or the stuff you have if it does the same thing then check to see what main jet you have the symptoms are similar to a TOO LARGE main jet someone may have stuck a 155 in there or reamed out the stock jet and not knowing what the heck they were doing made it way to large |
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Title: Re: Engine stumbles at high revs/rpms Post by running-it-stock on 07/27/10 at 09:08:22 The screws holding the diaphragm on the carb stripped on me. I managed to get one of them out but the other 3 stripped. I then used a dremel like tool to cut through one of the screws so that I could use a flat head screw driver, but it still wouldn't budge. I tried blow drying it with no success. Have any of you had success with soaking the screws in wd-40, or heating them up with a solderer to make them come out? Any other ideas on how to remove these screws? |
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Title: Re: Engine stumbles at high revs/rpms Post by justin_o_guy2 on 07/27/10 at 09:50:13 Get a hand held impact from Harbor Freight for 5 bux. JIS tips fit the screw heads right, a #2 phillips just doesnt fit as well. |
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