davetfft
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I'm running 2 4.6 and a 5.9 and all have high end fuel starvation symptoms and tuning seems to have no affect so I'm wondering if my fuel type isn't correct. What % fuel do folks run with these larger engines?
It has great acceleration, pops easy wheelies, decent blue smoke (not a cloud, just a stream/trail) and sounds like it's running fine and then it sounds like it's starving out until you let up then it's fine again. The 5.9 is a brand new unit as is one of the 4.6, my other 4.6 is a little old but a good solid runner, all three exhibit the same behavior.
Am I just completely botching the tune or is something else up? It's consistent with ONLY my HPI engines. My MAC, OS and TRX engines all run great so I believe I understand basic tuning... or do I?
Any thoughts appreciated...
Dave
*Note- also checked head tightness, new hoses, hose routing (no pinching or near heat sources), exhaust seals, ,,,
It has great acceleration, pops easy wheelies, decent blue smoke (not a cloud, just a stream/trail) and sounds like it's running fine and then it sounds like it's starving out until you let up then it's fine again. The 5.9 is a brand new unit as is one of the 4.6, my other 4.6 is a little old but a good solid runner, all three exhibit the same behavior.
Am I just completely botching the tune or is something else up? It's consistent with ONLY my HPI engines. My MAC, OS and TRX engines all run great so I believe I understand basic tuning... or do I?
Any thoughts appreciated...
Dave
*Note- also checked head tightness, new hoses, hose routing (no pinching or near heat sources), exhaust seals, ,,,