I have a Yamaha r1 2008 and i have heard that there is a valve fault. Valve arms wear fast because they have a manifacturing error. Can the valve go across and break the entire engine.

SOURCE: 2000 Honda Accord EGR Valve Error P0401

Jason,
-after you change the part you have to reset/clear the code

-this can be done by either:
(1) using the OBD2 code reader that Autozone used OR since option 2 (below) is very quick
(2) disconnecting the battery for about 30 seconds (this will delete all codes/radio presets/etc) but it will also clear the 'check engine' code
-this is what I do AFTER i write down my radio station presets :)

-hopefully the new EGR valve resolves your issue after you CLEAR the code
...but that code just means a an insufficient amount of Exhaust Gas recirculation (pressure difference) used to keep the emissions in check
-if it comes back, then there are a few other fixes to try also

-let me know if you need further assistance
-please remember to rate me `fix-ya`if it works
thanks

Jerry Koski

• 443 Answers
• Posted on Apr 24, 2009

SOURCE: knocking or ticking in the

you are right its either a rocker arm broken or loose or it also could be a broken valve spring so look for all three While you have the valve cover off to save you coming back and looking again ... thanks Jerry

SOURCE: I have a purge valve or VMV fault code 1443 EVAP vaccuum system error

Without more information or testing its impossible to help diagnose this problem. However, when is the last time the oxygen sensor been replaced. My best guess in this situation and remember that this is not a easy item to replace as it is located within the exhaust system and is usually corroded.

Marvin

• 85242 Answers
• Posted on May 20, 2009

SOURCE: fast idle after warm up .already changed IAC valve

fast idle is many times caused by a engine intake vacuum leak, use a can of carb spray and spray the top of the engine for leaks, if u hit one u will hear the eng change idle speed, also look for split or leaking vacuum hoses.

SOURCE: how to adjust valve clearance on a 1999 sunfire

There is no valve adjustment for that engine, Hydraulic lifters, You might remove the valve cover and see if you have a rocker arm loose