revving problem
#1
revving problem
I've having an issue with the engine in high rpm.Blazer 4.3,1995.
I replaced the water pump & temperature sending unit(it heating at almost 3/4 and I wanted to see if it was not the clutch switch, now I know it is $$$). Also replaced the plenum gasket.
putted back all the parts but now its revving big time. I don't have a rpm but I would say its at least 3500!
And also, I had to put a gaz hose to the tbi unit.no more gaz leak
I noticed when removing the plenum, the unit that connects in the middle of the spider is easy to remove,seems like the retainer is broken.Truck starts so I guess its ok for now.
Checked for cracks in the power brake & cruz control hose but they seem ok.
Is it air going in somewhere that I cannot seem to find? Putted some tape around the gasket to see if it sucks,but no go.
Any clue please?
Thanks in advance,
Mart
I replaced the water pump & temperature sending unit(it heating at almost 3/4 and I wanted to see if it was not the clutch switch, now I know it is $$$). Also replaced the plenum gasket.
putted back all the parts but now its revving big time. I don't have a rpm but I would say its at least 3500!
And also, I had to put a gaz hose to the tbi unit.no more gaz leak
I noticed when removing the plenum, the unit that connects in the middle of the spider is easy to remove,seems like the retainer is broken.Truck starts so I guess its ok for now.
Checked for cracks in the power brake & cruz control hose but they seem ok.
Is it air going in somewhere that I cannot seem to find? Putted some tape around the gasket to see if it sucks,but no go.
Any clue please?
Thanks in advance,
Mart
#2
Sounds like it's sucking air in someplace. Take a propane torch, turn it on (don't light it ), and move it around the engine and hosing connections to see if the rpm's change while it idles. If you find a spot where it does, there's the leak.
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