Skip the auto shop - Our mechanics make house calls

Q: no start issue 1990 ford ranger custom v6 2.9l automatic RWD

asked by on

so, i just bought this truck, drove it around the block to diagnose power loss issue, which was a blown cat. so im gonna custom build the exhaust but cant start it now after removing the O2/AFR sensor only part of the exhaust connected are the manifolds, its getting spark, but idk how old the plugs are or if they are fouled, its also getting fuel and pressure, not sure psi, but it sprays fuel from the test nozzle. and the pump does turn on. it has compression and timing is still good. im just at a stand still..

My car has 140000 miles.
My car has an automatic transmission.

A: If, by chance, the fuel has been in the fue...

If, by chance, the fuel has been in the fuel tank "for a while", it won’t burn, at least not in an engine. So, the first thing to consider is the age of the gas. The plugs do have to be inspected and possibly replaced, as you have noted. So, I would follow-up with the plugs. If the fuel is fresh, the plugs are new and you see a spark, and the injectors are delivering fuel (check each injector), that means one thing and one thing only: the air fuel ratio is wildly off, making ignition of the mixture impossible. Double check the timing because if that is way off the car won’t start. To rule out the possibility of a too lean mixture at cold start (when the coolant temperature sensor typically sends a signal to enrich the mixture), try spraying a little starter fluid into the intake while cranking and see if the engine starts and runs. If it does, check the sensors that provide inputs to the PCM to enrich the mixture when cold (could be temp sensor, cold start injector, etc.). If you desire that a certified mechanic from YourMechanic resolve this no-start problem for you during a mobile visit to your home, by all means, please request a Diagnostic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car stalls when pressing brake pedal

An experienced technician will be able to determine whether the stalling is directly connected to the application of the brake pedal. The vehicle is equipped with a brake booster which uses engine intake manifold vacuum to offer power assisted braking....

Q: It has power put wont start what could be the problem

Hello there, thank you for asking about your 1997 Dodge Grand Caravan. You will need to have the vehicle scanned and the fuel pressure tested to isolate the problem to the ignition or the fuel pump. If there is no...

Q: Fuel vapor leak

A mechanic would need to do a through inspection to see why the injectors were damaged, and check all vent hoses for leaks. Sometimes, a smoke machine can be used to find what is leaking. I recommend having a mechanic,...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...