I have another long thread about what got me to here so here is a quick summary. My #3 cylinder is not firing properly at low RPMs and get popping, etc. and just runs like crap in general. Figured out if disconnect the Air Intake Pressure sensor all cylinders are well alive. Then realized if I plug the sensor back in and disconnect the vacuum line going to it it is also fine. So something is up with my vacuum line pressure or similar.
I think someone did a bad pair valve mod that is perhaps causing all of this (or not). Here is a schematic and some pictures.
Why would one of the #2 and #3 vacuum lines not be connected and actually have the nipple pulled out from the manifold !!!????
As mentioned above, this pic shows the missing vacuum line and no nipple for it to conenct too next to the vacuum line that is conencted. There would normally be a second brass nipple next too it I assume.
This is what they did at the headers to plug the ports with a screw. Looks like there might be some "epoxy" in there too.
Could someone show me a schematic of how the vacuum lines should be routed in my case (no stock airbox or pair valve)?
Are the vacuum line nipples in the intake manifold replaceable and if so where to get and do they just press in? It doesnt look like they filled the holes with anything.
Should I do one of the more professionally plug kits vendors sell like BDE at the header location instead of the screws or are those screws likely good enough?
I think someone did a bad pair valve mod that is perhaps causing all of this (or not). Here is a schematic and some pictures.
Why would one of the #2 and #3 vacuum lines not be connected and actually have the nipple pulled out from the manifold !!!????
As mentioned above, this pic shows the missing vacuum line and no nipple for it to conenct too next to the vacuum line that is conencted. There would normally be a second brass nipple next too it I assume.
This is what they did at the headers to plug the ports with a screw. Looks like there might be some "epoxy" in there too.
Could someone show me a schematic of how the vacuum lines should be routed in my case (no stock airbox or pair valve)?
Are the vacuum line nipples in the intake manifold replaceable and if so where to get and do they just press in? It doesnt look like they filled the holes with anything.
Should I do one of the more professionally plug kits vendors sell like BDE at the header location instead of the screws or are those screws likely good enough?