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Strong gas smell when starting

Originally Posted by Z_ealot Yup, performed a block check as well multiple times and turned up nothing. All i know at this point is that everything seems to be pointing

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Old 10-20-2017, 12:20 AM   #1 (permalink)
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Yup, performed a block check as well multiple times and turned up nothing. All i know at this point is that everything seems to be pointing towards heat being the instigator when it comes to the fuel trims and the engine bogging down. The only other odd thing i can point out that started more recently within the last two months is that from a cold start right as the coolant temps are getting up to normal if im accelerating i will hit a dead spot in the powerband that lasts for no more than a second and then the car will be completely fine after that until the engine gets heatsoaked and starts bogging down again.


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Hmm I’m kind of out of ideas for remote help. Any chance the AC compressor is going out and just poor timing after the cooling service (I highly doubt it)? I’ve never seen one put extra load on the system to make it overheat but I’m kind of lost here. Running lean would run hotter but your fuel trims don’t indicate that and you don’t have any fuel trim faults, all your ***** new and both banks seem to be balanced. Your in SoCal there should be some good shops down there but remotely (and not a Nissan specialist) I’m drawing a blank.
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Old 10-20-2017, 08:08 AM   #2 (permalink)
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Hmm I’m kind of out of ideas for remote help. Any chance the AC compressor is going out and just poor timing after the cooling service (I highly doubt it)? I’ve never seen one put extra load on the system to make it overheat but I’m kind of lost here. Running lean would run hotter but your fuel trims don’t indicate that and you don’t have any fuel trim faults, all your ***** new and both banks seem to be balanced. Your in SoCal there should be some good shops down there but remotely (and not a Nissan specialist) I’m drawing a blank.

There is one thing i noticed after i had the ac system recharged by a shop i trust and go to all the time for things i cant do at my apartment complex. After they evacuated and then recharged my system when i replaced my radiator i get cold air, but not as cold as before they serviced the ac system. When the rpm on the car get up to about 2500 though it finally starts blowing very cold air like it did before the ac service. Not sure if that’s an indication of anything or that they just didnt service the ac system properly, but that’s the only other odd thing i can think of.


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Old 10-20-2017, 10:11 PM   #3 (permalink)
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Check your A/C for a leak. One of the o-rings at a connection may not be right.
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Old 10-21-2017, 01:44 PM   #4 (permalink)
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Check your A/C for a leak. One of the o-rings at a connection may not be right.


Checked the ac lines for leaks this morning, no leaks anywhere


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Old 10-26-2017, 09:20 PM   #5 (permalink)
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Hmm I’m kind of out of ideas for remote help. Any chance the AC compressor is going out and just poor timing after the cooling service (I highly doubt it)? I’ve never seen one put extra load on the system to make it overheat but I’m kind of lost here. Running lean would run hotter but your fuel trims don’t indicate that and you don’t have any fuel trim faults, all your ***** new and both banks seem to be balanced. Your in SoCal there should be some good shops down there but remotely (and not a Nissan specialist) I’m drawing a blank.
So I found something interesting....it seems we inadvertently performed the mixture ratio self learning reset procedure when we unplugged both the MAF's, I'm wondering if the computer on this car stores the fuel trims in a non volatile memory section of itself? as the FSM doesn't seem to list unplugging the battery as a procedure to reset the fuel trims



Also I've been keeping track of the fuel trims since after we unplugged the MAF's and over the last week of normal driving with a nice long trip to start off with and this has been the result....



No more gas smell after leaving the car sitting like what was happening before and haven't had an instance of it semi-stalling in this last week since our accidental reset procedure

Last edited by Z_ealot; 10-26-2017 at 09:25 PM.
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