96 GTX bogs after 30 secs running

[hmg]

96 GTX runs well for about 30 secs then just bogs - no power. idles fine. Shut it off, leave for a bit, restart and same thing. Any suggestions would be appreciated.

Engine rebuilt a few years ago. Have replaced the following in addition to the motor job:

ignition coil, fuel selector valve, grey fuel lines, wear ring

 

[mwat65]

Sounds like an overheat issue.

 

[mikidymac]

Try opening the fuel cap when it happens, als pull the seat and make sure you don't have any exhaust leaks.

 

[pwgsx]

Was thinking exhaust leak too. Try running with no seat on and see what happens. Did you ever clean and rebuild the carbs after changing the fuel lines?

 

[hmg]

thanks for the ideas. carbs were done after rebuild, but not since changing the fuel lines

 

[pwgsx]

Whoever did the work should have known the grey lines were bad news. I cannot believe they kept them on there. They make a green goo around all of the carb nipples. Did you notice this when you changed the lines?

 

[hmg]

I was surprised too. I'm not a mechanic and relied on others to do the work. Lots of info out there for do it yourselfers. I was annoyed to say the least.

I noticed a little residue but nothing excessive. sounds like re-visiting the carbs and checking the exhaust are my next steps

 

[hmg]

Ran with the seat off today - no leaks. Thoughts on next steps? Carbs?