Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

99 civic lx hesitation problem when motors warmed up only and through all rpms

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Old Nov 20, 2019 | 10:20 AM
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Chris Neven's Avatar
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Default 99 civic lx hesitation problem when motors warmed up only and through all rpms

I also smell gas I think when I drive alot with the hesitation acting up but it's not a gas leak I do t think..normal mpg. I put in 5 30 Mobil 1 full synthetic w a third can of sea foam n filled up w 93 sea foam the rest in gas. Next did fuel filter n sea foam gas cleaner. I don't know where to look next?..the spark plugs are dry n burned white to dark grey in d 2 months they've been in. Any ideas really appreciated. Tia. Chris
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Old Nov 20, 2019 | 09:10 PM
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Default Re: 99 civic lx hesitation problem when motors warmed up only and through all rpms

Originally Posted by Chris Neven
I also smell gas I think when I drive alot with the hesitation acting up but it's not a gas leak I do t think..normal mpg. I put in 5 30 Mobil 1 full synthetic w a third can of sea foam n filled up w 93 sea foam the rest in gas. Next did fuel filter n sea foam gas cleaner. I don't know where to look next?..the spark plugs are dry n burned white to dark grey in d 2 months they've been in. Any ideas really appreciated. Tia. Chris
anyone? Please....
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Old Nov 21, 2019 | 03:54 AM
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Default Re: 99 civic lx hesitation problem when motors warmed up only and through all rpms

running rich?
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Old Nov 21, 2019 | 05:22 PM
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Default Re: 99 civic lx hesitation problem when motors warmed up only and through all rpms

check crank/cam alignment.
could be off a bit causing unburnt gas.
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Old Nov 21, 2019 | 05:28 PM
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Default Re: 99 civic lx hesitation problem when motors warmed up only and through all rpms

Yes it's running rich...I smell gas when I open the throttle more than a little n that's when it hesitates...lots of codes misfire in all cylinders n ow sensor bank1 high n low voltage...ordered a new o2 upper and valve cover gasket...I'm thinkin wires and rotor w dizzy cap possibly but I'm trying to zero in on the problem not replace everything..I don't have $ like that...thankyou all for responding..any more ideas are greatly appreciated
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