EGR valve replacement

[wpej]

Hi folks
I took advice on putting in a new egr valve due to pinging knocking. It seemed to solve the problem. After 100 miles or so it was back to doing the same thinkg. Any Suggestions?

[rlith]

Originally Posted by wpej

Hi folks
I took advice on putting in a new egr valve due to pinging knocking. It seemed to solve the problem. After 100 miles or so it was back to doing the same thinkg. Any Suggestions?

More than likely your other EGR valve was fine as well. What's probably happening is that you have loose carbon in your intake and it's throwing chunks of carbon into the EGR and clogging it.

Run a can of seafoam through your system.... After you're done, pull the EGR and clean it out with a wire brush and carb cleaner... Now take a thin screw driver and pick out as much carbon as you can from the manifold side...

Run your motor for a couple of minutes without the egr on it and do a few short revs to about 3500-4000 rpms. This will blow out any loose carbon chunks still in there. Put your egr back on.

Now pull your both your 1 and 2 plugs and inspect them, how do they look? Are they fouled? If so, replace all your spark plugs if needed...

That should take care of you.

[wpej]

Originally Posted by rlith

More than likely your other EGR valve was fine as well. What's probably happening is that you have loose carbon in your intake and it's throwing chunks of carbon into the EGR and clogging it.

Run a can of seafoam through your system.... After you're done, pull the EGR and clean it out with a wire brush and carb cleaner... Now take a thin screw driver and pick out as much carbon as you can from the manifold side...

Run your motor for a couple of minutes without the egr on it and do a few short revs to about 3500-4000 rpms. This will blow out any loose carbon chunks still in there. Put your egr back on.

Now pull your both your 1 and 2 plugs and inspect them, how do they look? Are they fouled? If so, replace all your spark plugs if needed...

That should take care of you.

Hi
Thanks I ran the seafoam through, had a lot of carbon come out. I still think I need to to another run through of it. It is almost running right. Still have a few pings, I am going to change plugs and from there. Once again thanks for info.


Paul

[dmbrisket 51]

careful, sea foam is great stuff, but has a patrolium distalent in it (as all additives do) which can cause buildup on the intake side of your valves