Sid, does your engine go very rich at mid to low throttle settings? Mine with the Zenith carb was good at idle and full throttle, but went very rich to the point of fouling plugs at mid range. I didn't know what was going on until I installed the mixture meter then I could compensate for it. Spoke to an engineer at Zenith and he told me that the part number for that carb was the generic one not tuned for a particular engine and there was a jet in it that should be a little bigger to even out the mixture across the whole throttle band.
Brian Kraut -------- Original Message -------- Subject: Re: KR> Progress From: Sid Wood via KRnet <krnet at list.krnet.org> List-Post: krnet@list.krnet.org Date: Thu, May 29, 2014 1:33 pm To: <krnet at list.krnet.org> Made the first ground engine run after: the engine re-location (to adjust CG), installing new RevMaster oil cooler, oil pump (to control high oil temps), moving the fuel pump (to fix vapor lock) and adjusting the Zenith carb. After an eight-month stand-down the 2180 VW fired off on the fourth blade; runs smooth and strong. After a little warm up idle can be set at 600 RPM, but shakes a lot. 700 RPM is much smoother. OAT was 57 F & RH about 95%. Carb was making ice at 28 F. Carb heat works well. Cabin heat off the oil cooler works good. Mixture Meter works good. Have 6.9 hours TT on the engine. And no leaks!!! Need to finish the cowl, do another W & B, sign off the condition inspection and get on with Phase I flight testing. Sid Wood smwood at md.metrocast.net Tri-gear KR-2 N6242 Mechanicsville, MD, USA _______________________________________________ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
