Is changing fuel pump a noobie project?
Hi guys 91 miata full of gas’s was on a drive about 30 minutes and the car died no power at all and I am having it towed home. I think the problem is the fuel pump but I am worried about accessing it in the gas tank bc I’m not a pro. Is this a huge job?
Is changing fuel pump a noobie project?
+1 Test the circuits 1st.
Step 1: Park outside
Step 2: Locate and put a fire extinguisher nearby outside the car.
Step 3: Loosen gas cap to relieve the pressure in the tank. This prevents the golden shower.
https://media1.giphy.com/media/SreAp5WMZHfhK/giphy.gif
After you remove the fuel pump hanger, lay something (non metallic) over the hole in the tank. This cuts down the fumes and prevents stuff from falling in while you change over the pump.
I have bought this for 3 separate Miatas. It’s a nice price, inclusive, and OEM brand:
https://a.co/d/6durlPJ
Every post above is very helpful.
Only other caveats:
Be gentle removing the fuel hanger assembly. The fuel level arm hangs out in space. Same with reinstalling it.
The two Phillips screws at the base plate under the pump are JIS and a little soft. I have used visegrips clamped to the head of the screw in coordination with a regular Phillips screwdriver just to crack them loose to remove them.
Check the wiring on the hanger (that goes in the tank) for shorts, burnt connections, etc. Check the connections at the top (outside the tank) for similar damage.
If your hanger is crusty and corroded, source another used one. SNS Parts can get you squared away (if in the US)
If you replace the pump and it doesn’t work, holler back. There will be a few steps to check where the fault is (pump relay or circuit controlling relay - they are different)
Take your time. Good luck!
Is changing fuel pump a noobie project?
There is a big fuse on the right side fender fuse box.
If you are hearing the pump prime when you turn the key, something else is going on.
Fuel comes into the engine bay at the right side. You will see two hoses coming up from underneath. One is supply, the other is return. Make sure not to mix them if you remove both.
You need to check for spark.
It would not be uncommon for the cam angle sensor to fail at this age, and suddenly,
but that is only an idea.
Also, most importantly, did your timing belt break?