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Forum: General Maintenance and Repair

07-14-2006, 08:22 AM

Replies: 84

Just failed emissions twice

Views: 10,662

Posted By DirtyOldTown

I don't think SeaFoam would hurt, but I'm pretty...

I don't think SeaFoam would hurt, but I'm pretty sure it wouldn't work in this case. The passage is about as big around as a pencil and maybe two inches long; it gets packed entirely full of carbon....

Forum: General Maintenance and Repair

07-14-2006, 05:59 AM

Replies: 84

Just failed emissions twice

Views: 10,662

Posted By DirtyOldTown

, The Honda V6s were bad about the egr...

,
The Honda V6s were bad about the egr passage in the upper intake manifold getting clogged with carbon, causing a P0401. Their fix was to drill out the EGR passage and install a metal sleeve to...

Forum: General Maintenance and Repair

07-11-2006, 09:16 AM

Replies: 84

Just failed emissions twice

Views: 10,662

Posted By DirtyOldTown

krousdb: Was the car fully warmed up when you had...

krousdb: Was the car fully warmed up when you had it tested? It'd run rich if it were cold. Maybe an intermittent misfire, but 239 is pretty low. How does it run? Possibly a bad cat. conv. - the...

Forum: General Maintenance and Repair

07-10-2006, 10:59 AM

Replies: 84

Just failed emissions twice

Views: 10,662

Posted By DirtyOldTown

Usually when head gaskets blow on these things,...

Usually when head gaskets blow on these things, the oil never gets contaminated. The gasket will allow coolant into the comb. chamber and it will smoke (steam) out the tailpipe - this is just from my...

Forum: General Maintenance and Repair

07-10-2006, 08:23 AM

Replies: 84

Just failed emissions twice

Views: 10,662

Posted By DirtyOldTown

Fix the overheating first. NOx increases with the...

Fix the overheating first. NOx increases with the temperature in the combustion chamber, and overheating will cause an increase in NOx. It's also possible that your EGR valve is not working, but I...

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