jonofranke
New Member
Hey guys
I’m really stuck with this one and want some advice before I rebuild the carbs
I have a 1997 gtx, not been run in years bought it of an old fella with no mpem.
Chucked a new mpem in and took apart the carbs to check them out. There was a fair bit of water/oil mix in them with a bit of rust.
The rubber diaphragms were slightly eroded on the sides with white stuff? But no holes so decided to clean it all up and put it back together.
Started it up eventually but it never ran great. I would have to add fuel manually to get it started sometime and other times it would start no issues. Normally when it was warm.
When throttled it would hold it at the rev you took it to despite the throttle going back to normal. Sometimes it would keep reving up and I would have to choke it or put the lanyard.
Decided to take carb apart again to inspect.
Gave it a good clean noticed the diaphragms one was slightly stiffer than the other. Did a pop test on both and where popping at 35-40
Put it back together and had the same issues. Found that if the mag side carb was choked a fair bit it would run better with no hanging or stalling.
Ran it on the water like this for a bit but there wasn’t much high end power it didn’t rev that high( I assume because one carb was choked)
The mag side carb seems to be sucking in heaps of air compared to the other. It is noticeable with your hand on the inlet.
Any ideas what it could be to cause these symptoms? Bad fuel pump? I swear it’s getting air from somewhere else but im stumped as to where. Gasket to block is good I replace them. And it’s only the MAG side carb that seems to need to be chocked.
Butterfly vv is good too
150 psi cold on both pistons
Need a fix fast cause the missus is getting mad at the amount of time I’m spending on it hahahaha
Cheers
I’m really stuck with this one and want some advice before I rebuild the carbs
I have a 1997 gtx, not been run in years bought it of an old fella with no mpem.
Chucked a new mpem in and took apart the carbs to check them out. There was a fair bit of water/oil mix in them with a bit of rust.
The rubber diaphragms were slightly eroded on the sides with white stuff? But no holes so decided to clean it all up and put it back together.
Started it up eventually but it never ran great. I would have to add fuel manually to get it started sometime and other times it would start no issues. Normally when it was warm.
When throttled it would hold it at the rev you took it to despite the throttle going back to normal. Sometimes it would keep reving up and I would have to choke it or put the lanyard.
Decided to take carb apart again to inspect.
Gave it a good clean noticed the diaphragms one was slightly stiffer than the other. Did a pop test on both and where popping at 35-40
Put it back together and had the same issues. Found that if the mag side carb was choked a fair bit it would run better with no hanging or stalling.
Ran it on the water like this for a bit but there wasn’t much high end power it didn’t rev that high( I assume because one carb was choked)
The mag side carb seems to be sucking in heaps of air compared to the other. It is noticeable with your hand on the inlet.
Any ideas what it could be to cause these symptoms? Bad fuel pump? I swear it’s getting air from somewhere else but im stumped as to where. Gasket to block is good I replace them. And it’s only the MAG side carb that seems to need to be chocked.
Butterfly vv is good too
150 psi cold on both pistons
Need a fix fast cause the missus is getting mad at the amount of time I’m spending on it hahahaha
Cheers