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Roy
Roy, Import/Domestic Specialist
Category: Honda
Satisfied Customers: 5719
Experience:  ASE Master Tech
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I have a 2000 honda odessey have changed all coil packs and

Customer Question

I have a 2000 honda odessey have changed all coil packs and spark plugs and injectors also a sensor for timming. And erg valve. Engine idles rough when starting and light comes. Runs really good after warms up.
Submitted: 1 year ago.
Category: Honda
Expert:  Roy replied 1 year ago.

good morning my name is ***** ***** I will assist

you have covered all the basics from the looks of it. I suspect carbon build up on the valves causing cold missfires. there are many products that will help with this. sea foam is a good product I use all the time. there are times that nothing will work and the heads need to be removed and the head disassembled to remove the carbon hardened on the valves.

try the sea foam first

Roy

Customer: replied 1 year ago.
I use Lucas fuel treatment on a regular basis
Expert:  Roy replied 1 year ago.

that is for the injectors, not the valves.

Roy

Customer: replied 1 year ago.
Ok I will try that next
Expert:  Roy replied 1 year ago.

hopefully it will work for you.

Roy

Customer: replied 1 year ago.
I need to pull the valve covers off and check for carbon build up. I have always done the timing belt on time I do have 435,000 miles on this van
Expert:  Roy replied 1 year ago.

no, the carbon is inside the cylinder head, not accessible from the top end.

Roy

Expert:  Roy replied 1 year ago.

how are you making out