Vspec Tuning Problem

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  • I recently purchased a brand new vspec..run perfectly after break-in process...changed the glow plug on second gallon and still fine, on third tank, it started to act weird, it stalled after high speed runs and hard to idle unless keep the throttle slightly pressed, I lean the HSN it went ok but the temp reached 221F, then I richen it just a little and it bogs, couldn't make high speed pass till it stalled, how come only small increments of needle turn could act like a 1/4 turn?

    Please Help
  • Sounds like an air leak...Vspecs have been known to have them. Start the engine and spray windex on it as its running..look for bubbles at the front bearing, the rear backplate, the carb base, the HSN and the carb boot
  • Quote: Sounds like an air leak...Vspecs have been known to have them. Start the engine and spray windex on it as its running..look for bubbles at the front bearing, the rear backplate, the carb base, the HSN and the carb boot
    Oh no, I hate air leaks! It's hard to find!...how about fuel tank or fuel line? btw what is windex?
  • http://images.google.com/imgres?imgu...G46-twefy4ztDw
  • Quote: http://images.google.com/imgres?imgu...G46-twefy4ztDw
    Oww thanks...
  • Quote: Oh no, I hate air leaks! It's hard to find!...how about fuel tank or fuel line? btw what is windex?
    You can check the tank and lines also, wont hurt to check all possibilities
  • Quote: You can check the tank and lines also, wont hurt to check all possibilities
    Ok thanks...I guess I have no luck in Nitro RC, bought a used werks B7 few months ago ended with broken crankshafts, and that engine was really hard to tune , this time I tried for a second chance with a new engine, still got problem ...is there any trouble free engines than broke after reasonable amount of time?
  • you gotta have patience in nitro, but most high dollar engines should give you to much problem if your ambient temps are fairly consistent. Try a Novarossi +4..... youll be happy u did
  • Quote: Ok thanks...I guess I have no luck in Nitro RC, bought a used werks B7 few months ago ended with broken crankshafts, and that engine was really hard to tune , this time I tried for a second chance with a new engine, still got problem ...is there any trouble free engines than broke after reasonable amount of time?
    All Engine will give you trouble you need to have patience to work on RC.
  • Quote: you gotta have patience in nitro, but most high dollar engines should give you to much problem if your ambient temps are fairly consistent. Try a Novarossi +4..... youll be happy u did
    Yeah I know..but sometimes this is beyond my patience limit...It's really hard to spend my workdays thinking about my engine problem hahaha..any links to Nova Plus 4? Their official website seems a bit confusing in categorizing the products...thanks
  • Quote: All Engine will give you trouble you need to have patience to work on RC.
    Yeah...I also into electric off-road, they're so much fun, but not as fun as Nitro..so it's a dilemma
  • http://www.carolinasrc.com/Webstore/...dproduct=11963

    Been meanibg to try one but I'm like that famous actor from china "Low Cash" right now.Word on the street is good on this motor.I normaly wouldnt rec a new motor for a little issue like you have with your v-spec but I had issues with mine & felt let down by its lifespan,seems hit of miss with that motor but when it worked it worked real good.
  • Quote: http://www.carolinasrc.com/Webstore/...dproduct=11963

    Been meanibg to try one but I'm like that famous actor from china "Low Cash" right now.Word on the street is good on this motor.I normaly wouldnt rec a new motor for a little issue like you have with your v-spec but I had issues with mine & felt let down by its lifespan,seems hit of miss with that motor but when it worked it worked real good.
    I'm with you butch. I bought my first and last V-spec last December. It's the best 3 gallon engine money can buy. The quality and craftsmanship is just way to subpar for me. There are too many awesome engines out there and some of them are half the price of V-spec. I'll never buy O.S. again
  • Quote: I'm with you butch. I bought my first and last V-spec last December. It's the best 3 gallon engine money can buy. The quality and craftsmanship is just way to subpar for me. There are too many awesome engines out there and some of them are half the price of V-spec. I'll never buy O.S. again
    you'll have to forgive jazzy, if it's not an xray or if it's an OS, it sucks. he's a little close minded, and he still thinks the earth is flat.
  • I have not personally run an O.S., but I get two opinions on their motors:

    1) Awesome, last forever, gobs of power.

    2) Crap, don't last 2 gallons, not worth their price.

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