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Car Forum / MINI / June 2003Hooray! stage1 kit fitted... boo hoo :'(
I just finished fitting a stage 1 kit on my 998 mini. I was already planning on having it rolling-road tuned because I knew it was going to need it... but I don't think she will get there! The engine has a nice "roar" but will only run if the choke is pulled out at least half way, and when I accelerate the engine loses revs until it either stops or I lift my foot from the accelerator... seems like too much air is getting into the engine. Does anyone have any suggestions to get the car to take me at least as far as the rolling-road. I don't have any experience with carburetors so I don't really know where to start Thanks! First thing to check, when the engine is running that bad is... Have you fitted the manifold gasket properly? Sounds like it's leaking air! check that first! > I just finished fitting a stage 1 kit on my 998 mini. I was already > planning on having it rolling-road tuned because I knew it was going [quoted text clipped - 6 lines] > experience with carburetors so I don't really know where to start > Thanks! > First thing to check, when the engine is running that bad is... > [quoted text clipped - 10 lines] > > experience with carburetors so I don't really know where to start > > Thanks! I'll check that... I'm also concerned about that piece of piping that goes from the inlet manifold to the.... the.... I' ve no idea what it is! I've seen pictures of engines on which that hole in the inlet manifold is plugged with a bolt. any guesses? > > First thing to check, when the engine is running that bad is... > > [quoted text clipped - 15 lines] > is! I've seen pictures of engines on which that hole in the inlet > manifold is plugged with a bolt. any guesses? That's the depression take-off for the brake servo. If your car doesn't have a brake servo (large trumpet looking thing on the left side of the engine bay), then the hole should be plugged. The car should definitely not run correctly if that hole is open. Another thing to check with the Stage 1, is that you'll be running leaner than before. You need to enrichen the mixture by fiddling with the mixture screw which is underneath the carb. > I just finished fitting a stage 1 kit on my 998 mini. I was already > planning on having it rolling-road tuned because I knew it was going [quoted text clipped - 3 lines] > either stops or I lift my foot from the accelerator... seems like > too much air is getting into the engine. That would be my assessment too! Fresh air, with insufficient fuel - suggesting a vacuum leak somewhere - have you left any vacuum lines off the manifold by accident, such as the brake booster hose? Are the carby to manifold join and the manifold to block join both sealing properly? > Does anyone have any suggestions to get the car to take me at least > as far as the rolling-road. I don't have any experience with > carburetors so I don't really know where to start If you can't find any vacuum leaks, where fresh air is getting into the system after the carby, then maybe the carby is simply set far too lean. If the carb was part of the kit then it was probably supplied adjusted completely lean? What sort of carb is it, maybe we can explain to you how to get it somewhere near right? GRaham. And Graham was sitting next to Elvis in the spaceship, which I thought was kinda strange, but then they turned to me and said: > > I just finished fitting a stage 1 kit on my 998 mini. I was already > > planning on having it rolling-road tuned because I knew it was going [quoted text clipped - 8 lines] > the manifold by accident, such as the brake booster hose? Are the carby > to manifold join and the manifold to block join both sealing properly? Some of the Stage1 kits I've seen have the inlet and exhaust manifolds pretty poorly matched - the flanges are slightly different thicknesses. Makes it difficult to get a good seal.  Signature(-AD-) <uniqueid 'at' lineone.net> http://website.lineone.net/~uniqueid/ Shake well before use. Sound like you need to block the pipe for the servo take off in the inlet manifold then! If the car won't run, then you have a fundamental problem, even if your carb isn't perfectly setup, at the end of the day you've only changed the air filter and exhaust! (Probably the needle is too lean, but not so lean the car won't even drive) > And Graham was sitting next to Elvis in the spaceship, which I thought was > kinda strange, but then they turned to me and said: [quoted text clipped - 15 lines] > pretty poorly matched - the flanges are slightly different thicknesses. > Makes it difficult to get a good seal. |
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