high rpm pinging?
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Senior User
Joined: Feb 2004
Posts: 339
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From: British Columbia
high rpm pinging?
hi, just curious, my van has recently started pinging on higher rpm acceleration. it's a 4.0l with no distributor, I didn't think it was possible. I have tried three different fuel brands all of which have worked before. only difference is I have just changed the plugs and it seems to have started then. also my temp gauge moves fromn o-to-m on the "normal" scale constantly. I have new rad and new thermostat and its full ,tried running full hot to circulate but no difference. sending unit?
thanx
007BRONCO
thanx
007BRONCO
Junior User
Joined: Mar 2004
Posts: 60
Likes: 0
check the plugs
Originally Posted by 007bronco
hi, just curious, my van has recently started pinging on higher rpm acceleration. it's a 4.0l with no distributor, I didn't think it was possible. I have tried three different fuel brands all of which have worked before. only difference is I have just changed the plugs and it seems to have started then. also my temp gauge moves fromn o-to-m on the "normal" scale constantly. I have new rad and new thermostat and its full ,tried running full hot to circulate but no difference. sending unit?
thanx
007BRONCO
thanx
007BRONCO
Just a suggestion make sure the plugs are the same as your old ones there are different numbers for different temperatures or applications.Just a shot in the dark.Seeing that you mentioned the pinging was only after changing the plugs,I would also make sure the wires are properly seated.
Mojo Hobo's
Two SENCES
Postmaster
Joined: Apr 2001
Posts: 3,818
Likes: 3
As mojo hobo mentioned, proper heat range for the plug is essential for correct engine operation. Also, the plug wires deteriorate internally over time, causing a ping and rattle. Plug wires are good for around 60-80K. Again, use a premium brand such as Motorcraft or Bosch. Avoid the cheaper sets or you will be replacing them again in as little as 30,000 miles. Moving and tugging on the plug wires during your recent plug replacements may have damaged one or more of the plug wires.
