1999 Ford Ranger 2.5L. #3 and #4 cylinders are not firing...

Q: 1999 Ford Ranger 2.5L. #3 and #4 cylinders are not firing, #2 sometimes doesn't fire.

asked by on July 19, 2017

Engine is getting air and has good compression. Fuel pump is working and I installed a new fuel filter. The injectors all read the same resistance so I assume they are all functioning. My next guess is to check if the cylinders are receiving power. Also, it could be that the fuel pump is not providing enough pressure to the fuel rail. It is either that or something with the injectors not getting signaled by the computer.

My car has 106000 miles.
My car has a manual transmission.

You should first check the fuel pressure is within specification. Then check plugs are getting fire and then do a compression test on all 4 cylinders. If all this is normal then remove injectors to look for clogged injector inlet screens for trash in the system that builds up and clogs the injectors. Clean or replace injectors as needed and flush out fuel rail.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

Diesel trucks idles fine but after driving doesnt idle

You will need to have the charging system and batteries tested to see if you have a defective battery or the charging system is not recharging them. Since you say you jump started engine tells me the batteries were dead...

Car not turning over.

From the description of the symptoms your vehicle is experiencing, I can tell right away that the starter and battery are likely not the culprits. While most people assume a non-starting vehicle is due to a bad battery or a...

when first started or ignition switch is turned on 2009 ford expedition starts clicking noise in dashboard

That is most likely a malfunctioning component in the ventilation controls, such as an actuator or blend door. It's actually not uncommon and thus there are quite a few reports of this "clicking". To resolve it requires a bit of...

Related articles

Symptoms of a Bad or Failing Ignition Lock Assembly
If your key is stuck in the ignition, won't go in, or can't start the car, you may need to replace the ignition lock assembly.
The Best Used Cars to Buy If You’re a Realtor or Real Estate Agent
If If you make your living as a realtor or real estate agent, you may have a number of considerations when it comes to purchasing a used vehicle. The most common considerations are budget, ability to transport people, and comfort....
A Buyer’s Guide to the 2012 Ford F-250
When When it comes to large, heavy-duty pickup trucks, the 2012 Ford F-250 only has two competitors – the Chevrolet Silverado HD and the Dodge Ram 2500/3500. Though the F-250 doesn’t outperform the Ram in the towing department, it certainly...