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rich but running hot?
Ihave a ofna nexx 8t with the force .32, It is pretty new, maybe a quart or two past my break in. I leaned it out a tiny bit and it has a beautiful stream of blue smoke all the way to hitting its top speed. But my temps are quite high, the couple runs I did with the leaner setting I saw 240-250. After a day of sitting Itook the glow plug out and it too has fuel on it so I know I am not running lean. Could this problem maybe be caused by bad fuel? I am using o'donells racing fuel (the one in the white bottle). Ibought it from my lhs and have no idea how long its been sitting, the lables faded quite a bit so I am guessing its been there a while.No love around my parts for nitro lol.
Any help would be awesome. |
RE: rich but running hot?
What was the outside temperature? 240 - 250 is not unreasonable.
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RE: rich but running hot?
Depending on how much fuel you ran for break-in, it's possible that the pinch is still a little tight and that will make it run a little hotter until it's fully broken-in. I also agree with nitro that 240-250 is perfectly fine after you've run it hard for a bit.
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RE: rich but running hot?
ORIGINAL: hardrock2401 I have a ofna nexx 8t with the force .32, It is pretty new, maybe a quart or two past my break in. I leaned it out a tiny bit and it has a beautiful stream of blue smoke all the way to hitting its top speed. But my temps are quite high, the couple runs I did with the leaner setting I saw 240-250. After a day of sitting I took the glow plug out and it too has fuel on it so I know I am not running lean. Could this problem maybe be caused by bad fuel? I am using o'donells racing fuel (the one in the white bottle). I bought it from my lhs and have no idea how long its been sitting, the lables faded quite a bit so I am guessing its been there a while. No love around my parts for nitro lol. Any help would be awesome. what is the oil/nitro content ? if your running a sport fuel with high oil its going to run very hot as opposed to a race fuel with lower oil.........Lower nitro/high oil fuels will run even hotter ..... something like 20/12 will run much hotter then something like 30/8 ............ |
RE: rich but running hot?
20 nitro, 8% synthetic oil is what I'm running...still on the original b4 "hot" plug
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RE: rich but running hot?
Is the driveline running free? No binding and such. What surface are you running on? Grass?Sidenote - I wouldn't run 100% synthetic fuel.
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RE: rich but running hot?
ORIGINAL: hardrock2401 20 nitro, 8% synthetic oil is what I'm running...still on the original b4 ''hot'' plug I didn't know OD made 8% oil fuel |
RE: rich but running hot?
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RE: rich but running hot?
Nothing blocking or dragging, all the drivetrain spins freely<div> Truck is mostly driven on dirt or hard packed gravel. Very rarley sees grass.</div>
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RE: rich but running hot?
Is the body opened up to let air get to the cooling head?
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RE: rich but running hot?
I'd also make sure your temp gun is giving an accurate reading. Good Luck.
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RE: rich but running hot?
ORIGINAL: flatpickhippster I'd also make sure your temp gun is giving an accurate reading. Good Luck. |
RE: rich but running hot?
quote: Even if it was it will never tune an engine properly. Might as well make sure its accurate before doing any tuning. |
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