1998 Honda Civic My engine is misfiring

Tiny
BERTO1213
  • MEMBER
  • 1998 HONDA CIVIC
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
My engine light turned on today and I got codes p1399 and misfire code for cylinder one and I changed all the spark plugs and the fuel injector for cylinder one the wires where changed about 2 months ago I really don't know what to do
Monday, March 15th, 2010 AT 9:08 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check no.1 compression both wet and dry tests could be blending in with P1399

Misfiring can also be cause by the following:

1. Defective spark plug.
2. Inadequate spark/coil, defective spark plug wire.
3. Lack of compression
4. False air leakage.
5. Faulty fuel injectors.
6. Insufficient fuel pressure.
7. Contaminated fuel.
8. EGR valve that is leaking.
9. Oxygen sensors.
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Monday, March 15th, 2010 AT 9:32 PM
Tiny
BERTO1213
  • MEMBER
  • 1 POST
The car shakes really bad when I brake and a little when I park I'm just really worried. Can I drive it like this I'm not sure because the first time the engine light turned on I changed the wires and put fuel injector cleaner and it worked for a couple months and then it started up again and I tried the cleaner again but it didn't work and then I changed the cylinder one fuel injector and all the spark plugs the mechanic deleted all the codes and it didn't turn on but the car still shaked a bit and then the light came back on again today
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Monday, March 15th, 2010 AT 10:24 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the vacuum hose that goes to the power brake booster and the booster itself if its leaking
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Tuesday, March 16th, 2010 AT 1:54 AM

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