Gary Lewis Posted January 18, 2018 Share Posted January 18, 2018 Gary, all 8 cyl bank fired truck EFI systems are grouped 4 end and 4 center cyls. So Injector 1 circuit is 1,4,5,8, injector 2 circuit is 2,3,5,6. If he has a leaking #8 injector the O2 sensor on the 1985-86 302 will not detect it as it monitors 1-4 only (right side). That is why starting in 1987 Ford moved the sensor to beyond the Y in the exhaust. The 1985-86 O2 sensors are not heated so have to be close to the exhaust ports. Thanks for the clarification, Bill. Link to comment Share on other sites More sharing options...
PetesPonies Posted January 18, 2018 Share Posted January 18, 2018 Thanks for the clarification, Bill. OK not that way for Mustangs, even SD Link to comment Share on other sites More sharing options...
Gsmblue Posted January 25, 2018 Author Share Posted January 25, 2018 OK not that way for Mustangs, even SD I have decided that the white smoke is not a major issue for now. No fluids are being consumed.. I think the problem has been all the short runs I do and the truck not getting up to temperature on these runs that are less than 5 miles. That combined with temps below freezing.. When I take her on longer runs of 10 miles plus, the smoke clears up... I will keep hold of the injector and will pull all the injectors when the weather improves, but this will happen after I check all the plugs and do a compression test... So, on to other issues, like the front windscreen leaking! Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 25, 2018 Share Posted January 25, 2018 I have decided that the white smoke is not a major issue for now. No fluids are being consumed.. I think the problem has been all the short runs I do and the truck not getting up to temperature on these runs that are less than 5 miles. That combined with temps below freezing.. When I take her on longer runs of 10 miles plus, the smoke clears up... I will keep hold of the injector and will pull all the injectors when the weather improves, but this will happen after I check all the plugs and do a compression test... So, on to other issues, like the front windscreen leaking! Sounds like a good plan. But, I'm not a fan of compression tests. Do a leak-down test. On the windscreen leak, if you are looking for a temp fix you can use flowable RTV. It won't stop rust if it has already started. But if the problem is just that the sealant has cracked, this this will flow in and seal the cracks. Link to comment Share on other sites More sharing options...
PetesPonies Posted January 26, 2018 Share Posted January 26, 2018 I have decided that the white smoke is not a major issue for now. No fluids are being consumed.. I think the problem has been all the short runs I do and the truck not getting up to temperature on these runs that are less than 5 miles. That combined with temps below freezing.. When I take her on longer runs of 10 miles plus, the smoke clears up... I will keep hold of the injector and will pull all the injectors when the weather improves, but this will happen after I check all the plugs and do a compression test... So, on to other issues, like the front windscreen leaking! See my leaks I found. My truck was leaking water and it turned out to be multiple places. Link to comment Share on other sites More sharing options...
Gsmblue Posted January 30, 2018 Author Share Posted January 30, 2018 See my leaks I found. My truck was leaking water and it turned out to be multiple places. Thanks for the advice. I did see your posts on leaks and I am certain I have no real ideal where my leaks are coming from right now! The plan is to change the windscreen as it is cracked. Pull the interior as much as possible (in the spring when it is dry) then chase the water leak. With regards to the compression test/leak test. I need to read up on this stuff too! Thanks for the comment, sounds like I need more tools/widgets! Link to comment Share on other sites More sharing options...
85lebaront2 Posted January 30, 2018 Share Posted January 30, 2018 Thanks for the advice. I did see your posts on leaks and I am certain I have no real ideal where my leaks are coming from right now! The plan is to change the windscreen as it is cracked. Pull the interior as much as possible (in the spring when it is dry) then chase the water leak. With regards to the compression test/leak test. I need to read up on this stuff too! Thanks for the comment, sounds like I need more tools/widgets! Mine had no factory sealant in the right side airbox, I discovered that when I was resealing the cowl area. I went out to Darth in a downpour when I had the carpet out and a bare floor, sat there and watched a trail start right up by the junction between the floorpan, firewall and inner side panel and trickle down the seam to the door opening then go right along there and puddle. Explained why I had rust all along that section. When I removed the panel (on a non-A/C truck it will be the vent) and used my phone to take a picture I saw metal with only paint on it, no sealer. Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 30, 2018 Share Posted January 30, 2018 Mine had no factory sealant in the right side airbox, I discovered that when I was resealing the cowl area. I went out to Darth in a downpour when I had the carpet out and a bare floor, sat there and watched a trail start right up by the junction between the floorpan, firewall and inner side panel and trickle down the seam to the door opening then go right along there and puddle. Explained why I had rust all along that section. When I removed the panel (on a non-A/C truck it will be the vent) and used my phone to take a picture I saw metal with only paint on it, no sealer. Dad's truck had some of the tranny-cover screws missing and others not tightened down properly. And, this was from the factory as the carpet had never been out. So, water had been coming in on the right side of the cover, running down between the carpet and floor, and rusting the floor away. Which explains why you could see the ground when I pulled the carpet. Link to comment Share on other sites More sharing options...
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