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Old 01-21-2011 | 09:12 PM
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cummins driver
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From: Danville, KY
Default RE: Some weird tuning issues with an engine...

After some reading im thinking some fine tuning of the MSN could be the cause of my lean bog in the mid range. It may not be transitioning to full fuel fast enough to keep up with the demands of the engine.

However, the idle is just aggrovating. The idle gap is fine, and I have tried several things to get the idle right. I have had it lean enough to where it was cackling at idle and it would still die after idling just a few seconds. I have richened it up and it dies really quick then. It leaves a nice thick smoke trail and I believe the HSN has to be pretty close, however im not kidding about the idle changing with the setting of the HSN. It shouldnt and i dont see how it is physically possible, but it sure seems like it does. I consider myself pretty good at tuning a nitro engine, and this one isnt awful or anything, its just not quite what it should be IMO. The engine does have great power and RPM. I hope to be able to mess with it some tomorrow during the day. Its gonna be cold, but oh well, its worth a shot.

Well, this is a fun little truck. Honestly the only thing i dont like about it so far is that the tires dont have foams. I like the engine, and think it will be ok once i get it dialed in and the rest of the truck is extremely simple and well built. Thats one thing i really like about it. I dont like having to order all the parts from tower either because their standard shipping is $10 even if its a dogbone, but ebay has some parts for them so i guess i wont worry about that till I break it. I only have about $45 in the whole truck with 2.4 radio, so im extremely pleased with it

Thanks guys!