Have RV Questions? Ask an RV Mechanic Online.
Hello, what powertrain is in this rv? Ford Or Chevy? Fuel Injected? What engine size? Do you have fuel pressure to the rail when it wont start?
Ok thats what I thought, There will be a fuel pressure port on the fuel rail on the passenger side, when it cranks and wont start need to verify you have 30 psi of fuel pressure at the rail. A diagnostic check for codes with a scan tool will flag any codes for the fuel pump relay circuit. Make sure when it doesnt start the check engine light come on when the key is turned to on and goes out to cranking or it can have an issue with the eec power relay that turns the check engine light on which sends power to the fuel pump relay. If it turns out when cranking that mean the pcm is getting an rpm signal to have spark an injector pulse.If you have fuel pressure and no start and have spark, possibly bad fuel being an rv if it sits a lot
You are welcome, if you need more help let me know.If I was helpful please leave a positive rating so i get credit for assisting you
Do you need more help with this concern?