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P0300 P0301 P1399 on my 98 honda civic. What do I need to replace?

 

Customer Question

P0300 P0301 P1399 on my 98 honda civic. What do I need to replace?

Submitted: 1450 days ago.
Category: Honda
Value: $9
Status: CLOSED
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Expert:  roach replied 1449 days and 23 hours ago.

p0300 is general misfire code

p0301 is misfire #1 cyl

p1399 is no honda known code

i would start by running compression check and changing spark plugs possibly wires

Customer replied 1449 days and 14 hours ago.

Tech,

I did the tune already like 2 weeks ago. I even check the compression on each cyclinder and they're not that bad at all. what's the next step???

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Expert:  roach replied 1449 days and 13 hours ago.

double check spark plug on #1 also check wires cap and rotor

Customer replied 1449 days and 8 hours ago.

Tech,

I smell gas on 1 cyclinder and on the spark plug. I think it's running lean.....should worry about that? That maybe the reason why the car is running rough!

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Expert:  roach replied 1449 days and 7 hours ago.

if you are smelling gas it is either too rich or not firing

Accepted Answer

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Expert:  roach replied 1447 days and 1 hours ago.

if i have helped please accept

Expert TypeHonda Mechanic
Category: Honda
Pos. Feedback: 100.0 %
Accepts: 278
Answered: 4/29/2009

Experience: honda dealership master mechanic since 1973

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