Having problems with your 2003 Lincoln LS ?

I'm getting P0300,P0301,P0304,P0308,P0316,P0355.. Why am I getting so many misfires?? spark plugs look fairly new and there are 4 new coils on cylinders2,3,5,6.... What steps should i take?? will fuel filter and spark plugs help????

Posted / edited by AnonymousUser on : 15-10-2018

Answers :

So your codes are: Multiple random plus misfires on 1,4,8. Misfire during startup, and ignition coil E (cyl 5) primary or secondary circuit malfunction.

You said that four new coils were installed. Perhaps the coil to spark plug order and the firing order have been scrambled. The spark plug wires may be old and leaky--especially if they are the originals from 2003. You could have a vacuum leak into the intake manifold, the EGR valve could be sticking open when it should be closed, the fuel filter could be clogged, the fuel pump pressure could be too low or stuck at the idle setting, the fuel injectors could be dirty, and cylinder compression could be low (putting on the wrong size o-rings when reinstalling injectors will prevent proper compression.)
Check for oil down by sparkplugs could use valve cover gaskets
Repair Help & Product Troubleshooting for 2003 Lincoln LS

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0054 seconds