Skip the auto shop - Our mechanics make house calls

Q: no fire on number 4 injector

asked by on

going down the road starts running bad. put new cam in it . missing had chev put new computer on it still missing no fire on number 4 injector have replaced sparkplugs and wires have replaced number 4 injector

My car has 199000 miles.
My car has an automatic transmission.

Hi there. Without being there to download any error codes stored in the ECU, my best guess would be that you have a damaged camshaft position sensor. However, if the cam was changed, but the timing or ECU was not adjusted accordingly, that could also be the source of your troubles. It might be a good idea to have a professional mobile mechanic come to your location and complete an engine is misfiring inspection.

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

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 runs fine, however the other day, I shut it off and went to start back up and it would not turn over or crank.

When you say you've got nothing, it makes me think the engine is not turning at all. If that is the case, you are looking at a battery or charging system problem. I don't recommend trying to jump the car,...

Q: Bad shaking and grinding

This is a sign of potentially bad or worn wheel bearings. When wheel bearings wear out or become damaged due to dirt or debris or lack of proper lubrication, they will cause this type of vibration which is more noticeable...

Q: Cooling fans not working. Replaced sensor, relays, thermostat and radiator fan.

Hello there, many different faults will cause the fans on your 1995 Chevrolet Camaro to not turn on. You have replaced many of the common failure points, but there are a few other potential causes. The most likely is the...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.