you may not even have one on the f550. Is there a vacuum diagram sticker under the hood to look at? It would at least show up there.
Oh come one now, you really think the EPA would let one slip through w/o an EGR?
Good point though. F550 didn't even register w/ me. But! I wonder what they would have changed on the 6.8 in the 550 to keep away from detonation.
In the Superduty, only the '99's had an EGR valve. They disappeared after that.
- art k. - Moderator for the Superduty, V10, 6.2L and FE forums
'13 Taurus SHO 3.5L Ecoboost w/Perf Pkg
'01 F250SD SC SB XLT V10 4x4 Volant CAI Hedman headers 5-star custom tunes on SCT X3
'97 Cougar XR7 30th Anniv Edition 4.6L
'74 F250 Highboy FE390 deceased! I've been wrong before, I'll be wrong again. Just wait and see. ®
Hello Pete here . My 2002 F350 V10 suddenly started idling rough . I have read the posts and have checked everything mentioned in posts PCV Valve is clean and clicks properly cheepo 90 elbow was replaced with copper long ago , connections are all good mileage is 100,875 and plugs were replaced 4 months ago , I have a fuel filter laying on my work bench that I have been meaning to install but that wouldnt cause the engine lite to come on which is illuminated . any advice would be appreciated this truck is in pristine condition and has never had any problems Pete
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