Rebuilt the motor for my brother in law in his 2002 Viper.
Noticed when I put it back together and started it, there was no smoke.
Did some checking, and noticed he had the oil line with the check valve on backwards, so it wouldn't allow
oil into the fuel pump (hence the need for a rebuild).
Now, I start the motor and have verified that I do have oil flowing all the way up to the fuel pump.
But, does not seem to be mixing with fuel inside the fuel pump, as I have zero smoke, even when holding
oil pump wide open.
Thoughts ?
Noticed when I put it back together and started it, there was no smoke.
Did some checking, and noticed he had the oil line with the check valve on backwards, so it wouldn't allow
oil into the fuel pump (hence the need for a rebuild).
Now, I start the motor and have verified that I do have oil flowing all the way up to the fuel pump.
But, does not seem to be mixing with fuel inside the fuel pump, as I have zero smoke, even when holding
oil pump wide open.
Thoughts ?
Is it the original fuel pump or did he just put a new/different one on also?
Nope, it’s the stock pump
Ok. I remember in 02 there were a few pumps that the brass fitting Going into the pump weren’t drilled thru. I guess if you have oil coming out the line before the pump then there must be a plugged pump? Do you have another one to swap out and try?
I’m sure I do somewhere, just don’t understand why it would just quit working, unless having the check valve backwards created a problem..
super1c
Super Moderator
Did you bleed the line well? Air pocket? Thinking out loud.
Yes, I did, like I said, had oil flowing up to the pump, with line off.
Yamahasrx700
Member
Whenever you work on the oil pump system you have to premix a full tank to allow the pump to do its job.
I have rebuilt several of these motors, and never had this problem before.
Usually see smoke in less than a minute.
Gonna try a different fuel pump I guess.
Usually see smoke in less than a minute.
Gonna try a different fuel pump I guess.
Vincent
New member
Are the fuel lines leading to the carbs showing any signs of colour from the oil?
look at original post
WOW, this is a good one! My only thought would be something inside the pump is pooched (debris restricting oil flow / mixing in the pump?) ? If you can thief a pump off one of your own sleds and swap to see the result? Keep us posted!
I think I have a used one floating around somewhere, trying to find it may be tough, lol.
I’d guess something plugged up the pump? No check valve particles got pushed into it? Unlikely tho. I’d swap no sense in risking a fresh motor.
Premix the fuel in the tank, mark the oil tank and take it for a short easy ride. Also when I put a check valve backwards it kept blowing the line off due to pressure, was the line attached still?
No, this was the same way. Blew one of the lines off the pump. But, they are back on once i turned the check valve.
I agree. "No smoke" is kind of subjective and adding some oil to the fuel tank should:
A. produce some smoke
B. protect in the event, as you suspect, the oil pump isn't working.
I would have expected smoke when you first lit it up just from the assembly lube.
Oil pump is working properly, as stated in original post.
I found another Viper/SRX fuel pump, so will try that I guess.
I found another Viper/SRX fuel pump, so will try that I guess.
Nice let the vipe live