98 expy 4.6L misses - updated pcv valve / hose assembly question
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98 expy 4.6L misses - updated pcv valve / hose assembly question
Hello all,
98 expy 4.6L, started acting up with the dreaded missing and stumbling a couple weeks ago. It was time to replace / clean many of the usual suspects anyways, to date have cleaned MAF, new IAC valve, new EGR valve, cleaned EGR tube, throttle body and plenum elbow. idles smoother than it ever has before, but still misses. Was going to replace the pcv valve and hose assembly, here's my problem. dealer only has the updated pcv hose assembly, which has a different rubber boot (seems larger - maybe like 5/8" vs existing 3/8", too big for the existing barb) where it hooks into the intake manifold. the updated pcv assembly part number is F85Z-6C324-CA. Has anyone run into this? possible the 99' and up intake manifolds have a larger barbed tube for the pcv connection than the 97-98 manifolds?
I don't want to go thru the effort of trying to get the existing one off and not have the new one fit. thinking if necessary could use the new tube, but take off the rubber boot and use a short length of fuel rated hose to go between the new hose and existing barb.
I don't think the pcv is the culprit with the engine missing, more along the lines of just going thru and replacing / updating things. just replacing the pcv valve did not help the miss. I have a UPR catch can sitting around that i am going to try to work into the pcv side as well...
fresh plugs and injectors next on the list.
98 expy 4.6L, started acting up with the dreaded missing and stumbling a couple weeks ago. It was time to replace / clean many of the usual suspects anyways, to date have cleaned MAF, new IAC valve, new EGR valve, cleaned EGR tube, throttle body and plenum elbow. idles smoother than it ever has before, but still misses. Was going to replace the pcv valve and hose assembly, here's my problem. dealer only has the updated pcv hose assembly, which has a different rubber boot (seems larger - maybe like 5/8" vs existing 3/8", too big for the existing barb) where it hooks into the intake manifold. the updated pcv assembly part number is F85Z-6C324-CA. Has anyone run into this? possible the 99' and up intake manifolds have a larger barbed tube for the pcv connection than the 97-98 manifolds?
I don't want to go thru the effort of trying to get the existing one off and not have the new one fit. thinking if necessary could use the new tube, but take off the rubber boot and use a short length of fuel rated hose to go between the new hose and existing barb.
I don't think the pcv is the culprit with the engine missing, more along the lines of just going thru and replacing / updating things. just replacing the pcv valve did not help the miss. I have a UPR catch can sitting around that i am going to try to work into the pcv side as well...
fresh plugs and injectors next on the list.
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