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Pete, Technician
Category: Car
Satisfied Customers: 28785
Experience:  17 years automotive training and experience.
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Mazda rx7 turbo: I have a sandrail with a 12b turbocharged

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I have a sandrail with a 12b turbocharged rotary engine (1988 vintage). It won't start. It is getting spark and does not smell flooded. I removed the fuel filter, connected fuel pump positive to the battery and nothing happened - but the wire got hot. Is the fuel pump toast or is something else wrong?
My name is XXXXX XXXXX I am a professional here at Just Answer/Pearl. I noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

If you jumped voltage to the fuel pump on the correct wire and you have no fuel flow at all and the wire was getting hot to the touch this usually indicates the fuel pump itself is at fault needing replaced and may be seized up.I have seen the pumps seize up before and cause this type of fault here.

I would have the pump tested to verify this is the fault here.

Thanks Pete
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Customer: replied 4 years ago.

Thanks Pete,


I know for certain that I had the correct wire connected to the battery. I assumed that the wire getting hot meant that the pump had seized, but your verification is extremely helpful Smile. Thank you so much. I'm also going to check voltage across the wire supplying the pump when ignition is active to be sure I'm getting voltage to the pump ... provided that all looks normal I'll assume the relay's are OK and replace the fuel pump. Mike G.

Sounds like your on track here Mike.If you need anything else let me know.

Thanks Pete

I am following up with you to see if you still needed help with your question you had asked.If my help didn't satisfy your question please let me know so we can continue.

Thanks Pete
Customer: replied 4 years ago.



Thanks for the follow-up. I checked voltage to the pump wires during ignition sequence and it measured about 12 V - analog meter so hard to pinpoint it - but right around there. So it looks like the relays are good. I ordered a fuel pump and fuel strainer and will install when they arrive. Hopefully that will fix it :-) having the fuel pump in the gas tank makes me nervous, but I know its a common practice ... Mike G.

Your welcome Mike.If you need anything else on this here let me know.

Thanks Pete