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SV420 Surging

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matth27

Joined: Sun Jun 23, 2013 11:34 am
Posts: 92
Vehicle: Sierra

Posted: Sat Dec 13, 2014 8:00 pm

Having a problem with my sv420 similar to other posts ive seen. I get intermittent power surging when driving, sometimes on startup will surge for a few kms, other times I will be driving then all of a sudden it starts surging, today it would surge for about 30 seconds then back to normal then surge again. I have replaced spark plugs, old owner replaced MAF as it was throwing a code, Have checked codes since and getting 12 (all good). Have tried running 95 and 98 premium and same problem.

Any suggestions?

DarkHorse

az supporter

Joined: Wed Apr 14, 2010 11:30 pm
Posts: 5413
Vehicle: 08 SV650

Posted: Sun Dec 14, 2014 6:32 pm

TPS, fuel filter/lines/pump, injectors, coil packs/HT lines, air filter in that order.

Reckon that about covers my bases...

matth27

Joined: Sun Jun 23, 2013 11:34 am
Posts: 92
Vehicle: Sierra

Posted: Mon Dec 15, 2014 7:16 am

TPS is good, has new air filter aswell. Is there a fuse or relay I can take out so I can change the fuel filter without fuel going everywhere? Old owner also replaced 1 coil will check the rest

DarkHorse

az supporter

Joined: Wed Apr 14, 2010 11:30 pm
Posts: 5413
Vehicle: 08 SV650

Posted: Tue Dec 16, 2014 12:32 am

Nah, I just swap 'em over as quick as I can. :lol:

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