Hi again!
Just a little update. The intake is off and is now on the bench in the garage awaiting some further inspection. The hose connector seems to be fine and the leak I wrote about earlier seems to have been coming from the gaskets - leaking "upwards" towards the valve covers and on to the intake manifold. The gasket surface on the intake has also suffered from this as there is some pitting around the coolant passages. So, based on this, and some other stuff, I have a few more questions on how to adress certain issues. Hope that´s ok with you guys.
1. When I was removing the fuel lines, I noticed that there was some fuel underneath the cap which covers the shrader-valve (spelling?) on the fuel line. I suppose that means that the valve has seen its better days, but is this a "standard" valve like the ones usually fitted on for example tires or is it something more specific for fuel lines?
2. About the corrosion-pits on the gasket surface. Would it be possible to use "liquid-metal" such as JB Weld or similar to smoothen out the pits?
3. Before starting this intake-operation, I read a lot about the spider injection and how the poppet injectors eventually start to leak due to carbon build up, heat and whatnot. However, the updated mfi-units were (are) not available for order (at least on Rock Auto and Summit) aside from non-acdelco brands which does not seem to be a good choice given the reviews and opinions which came up. So, I thought, well, the van was running fine before so "why bother"....but....there is a scent of fuel coming from the intake, especially when opening the throttle, indicating that there may be a leak on the inside. After scouting the internet, I found a company in the US called Motor Man Fuel Injection who sells refurbished mfi-units with, according to their website, new ac delco injectors fitted along with new o-rings and other bits and pieces...I just wanted to ask if anyone here has any experience from this company or any other advice regarding the mfi-upgrade?
Thanks again and best regards!
//Johan
Just a little update. The intake is off and is now on the bench in the garage awaiting some further inspection. The hose connector seems to be fine and the leak I wrote about earlier seems to have been coming from the gaskets - leaking "upwards" towards the valve covers and on to the intake manifold. The gasket surface on the intake has also suffered from this as there is some pitting around the coolant passages. So, based on this, and some other stuff, I have a few more questions on how to adress certain issues. Hope that´s ok with you guys.
1. When I was removing the fuel lines, I noticed that there was some fuel underneath the cap which covers the shrader-valve (spelling?) on the fuel line. I suppose that means that the valve has seen its better days, but is this a "standard" valve like the ones usually fitted on for example tires or is it something more specific for fuel lines?
2. About the corrosion-pits on the gasket surface. Would it be possible to use "liquid-metal" such as JB Weld or similar to smoothen out the pits?
3. Before starting this intake-operation, I read a lot about the spider injection and how the poppet injectors eventually start to leak due to carbon build up, heat and whatnot. However, the updated mfi-units were (are) not available for order (at least on Rock Auto and Summit) aside from non-acdelco brands which does not seem to be a good choice given the reviews and opinions which came up. So, I thought, well, the van was running fine before so "why bother"....but....there is a scent of fuel coming from the intake, especially when opening the throttle, indicating that there may be a leak on the inside. After scouting the internet, I found a company in the US called Motor Man Fuel Injection who sells refurbished mfi-units with, according to their website, new ac delco injectors fitted along with new o-rings and other bits and pieces...I just wanted to ask if anyone here has any experience from this company or any other advice regarding the mfi-upgrade?
Thanks again and best regards!
//Johan