 Gray exhaust tips!, Why would I have Gray exhaust tips? |
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| wes |
 Nov 7 2019, 05:41 PM
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#1
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wes  Group: Members Posts: 1,589 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California 
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So my carbs have been running a bit rich since I installed the new airbox but wanted to try something with the airbox before readjustment of the carbs as I believe it’s starving the airflow a bit. I’ve been running on the Costco premium unleaded. We went to the track and I topped off my gas tank from 1/4 tank of the premium unleaded to 163 octane leaded track gasoline. I knew she was running rich due to the slight black exhaust tip but after adding the track gasoline the the tips are a distinctive gray.
Did I screw up with the track gasoline or? My engine is a 2.4 stroker 4 cylinder and runs well with about 2,000 miles since the build.  |
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| johnhora |
Nov 8 2019, 06:47 PM
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#2
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Senior Member Group: Members Posts: 866 Joined: 7-January 03 From: Derby City KY Member No.: 107 Region Association: None
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wes...
grey is from the leaded race fuel..your 2.4 hp engine should love the 163 race fuel you didn't do any thing wrong to the engine by using this. if you start using the Costco premium unleaded again the tips will turn black again and that does mean it is running rich. Also it has alcohol in it. The race fuel does not have alcohol unless you are running a dragster.,.(IMG:style_emoticons/default/smile.gif) pull the plugs and take a look for running rich...better yet find some one with a wideband o2 sensor meter |
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| wes |
Nov 8 2019, 08:43 PM
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#3
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wes Group: Members Posts: 1,589 Joined: 8-December 07 From: Ukiah Ca Member No.: 8,436 Region Association: Northern California
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QUOTE(johnhora @ Nov 8 2019, 04:47 PM)  wes... grey is from the leaded race fuel..your 2.4 hp engine should love the 163 race fuel you didn't do any thing wrong to the engine by using this. if you start using the Costco premium unleaded again the tips will turn black again and that does mean it is running rich. Also it has alcohol in it. The race fuel does not have alcohol unless you are running a dragster.,.(IMG:style_emoticons/default/smile.gif) pull the plugs and take a look for running rich...better yet find some one with a wideband o2 sensor meter Thanks that’s what I wanted to hear. |
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Posts in this topic
wes Gray exhaust tips! Nov 7 2019, 05:41 PM
sixnotfour led baby, your guides are extra happy Nov 7 2019, 06:27 PM wes I know the lead is good for our engines the but th... Nov 7 2019, 07:48 PM
sithot
I know the lead is good for our engines the but t... Nov 8 2019, 05:29 AM JeffBowlsby Original plates to the car and what year is it? Nov 8 2019, 10:14 AM wes
Original plates to the car and what year is it?
... Nov 8 2019, 12:42 PM markhoward oh yea! Nov 8 2019, 10:24 AM wes So sounds like gray is good! Nov 8 2019, 12:45 PM burton73
So sounds like gray is good!
I always like... Nov 8 2019, 02:02 PM wes What I’m wondering is she was rich with Costco p... Nov 8 2019, 02:12 PM |
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