He is describing what happens when the fuel evaporates out of the carb, so the pump has to pump up fuel before it will start.
If you have a MToD subscription, engine masters has done a lot of testing on various types of spacers. They can have quite the impact depending on the intake and engine RPM range. For our engines, and the RPM range that they run, and the dual plain intake, I would probably go with a four hole designed spacer. An open spacer will give a bit more top end, but you will lose some lower RPM throttle response and torque.tallygrandwag wrote: ↑Tue May 24, 2022 11:20 am I have a 1990 GW. As the weather has gotten hotter, I find it is more and more difficult to start the Jeep after it has been running, then sat for more than 10-15 minutes. Most of the forum posts I've read say adding a phenolic spacer should help keep the carb cooler, resulting in easier starts when hot.
I have an AMC 360 with an edelbrock performer intake manifold and an edelbrock 1406 carb. I see open carb spacers (one big hole) and spacers with 4 holes on the edelbrock site, but they don't seem to explain the difference. Which type is the right type for my set-up? Anyone else have a carb spacer already on their rig with this same set-up? If so, what did you buy? Thanks.
Engine masters. Did a show on them. Good programtallygrandwag wrote:I have a 1990 GW. As the weather has gotten hotter, I find it is more and more difficult to start the Jeep after it has been running, then sat for more than 10-15 minutes. Most of the forum posts I've read say adding a phenolic spacer should help keep the carb cooler, resulting in easier starts when hot.
I have an AMC 360 with an edelbrock performer intake manifold and an edelbrock 1406 carb. I see open carb spacers (one big hole) and spacers with 4 holes on the edelbrock site, but they don't seem to explain the difference. Which type is the right type for my set-up? Anyone else have a carb spacer already on their rig with this same set-up? If so, what did you buy? Thanks.
That's interesting. Not unsimilar to my setup only I have a Holley Truck avenger carb. I don't have hard starting when hot, even here in AZ.tallygrandwag wrote: ↑Thu May 26, 2022 11:13 am Will e. I'm running a small Holley Mighty Mite Fuel Pump. The manual says it runs 32GPH @ 4-7 PSI. I do not have a return filter. It is just gas in, then gas to the carb. It is wired to run when the ignition is on. I always let it run for 5-10 seconds before I try to actually crank the engine. It is mounted to the frame rail under the driver, so, it is easy to hear. Everything starts great when the engine is cooler. My problem only happens after it has been running and then I let it sit for a while. That is why I think it is a heat issue.
You mentioned that you have installed a heat shield for your carb. Can you post some photos of your set-up. Was the heat shield something you bought or made? Thanks.
My fuel filter is on the fender, and the fuel line is insulated with the common home pipe insulationdevildog80 wrote: ↑Mon May 30, 2022 12:34 pm Regarding your fuel filter placement, as you are not using a return type, did you place your filter down just off fuel feed at the frame, or is it still on top of the engine just forward of the carb?
Right now it is sitting just above the valve cover. Never even occurred to me to move it. I probably should!devildog80 wrote: ↑Mon May 30, 2022 12:34 pm Will e,
Regarding your fuel filter placement, as you are not using a return type, did you place your filter down just off fuel feed at the frame, or is it still on top of the engine just forward of the carb?
Thinking when it comes time for me to put my fuel feed system back together, and not using a bypass filter with electric pump, it looks like the filter would be coolest just off the frame connection.
will e wrote: ↑Thu Jun 02, 2022 12:19 pmRight now it is sitting just above the valve cover. Never even occurred to me to move it. I probably should!devildog80 wrote: ↑Mon May 30, 2022 12:34 pm Will e,
Regarding your fuel filter placement, as you are not using a return type, did you place your filter down just off fuel feed at the frame, or is it still on top of the engine just forward of the carb?
Thinking when it comes time for me to put my fuel feed system back together, and not using a bypass filter with electric pump, it looks like the filter would be coolest just off the frame connection.