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2004 Chevrolet Colorado 1SB LS Z85 Crew Cab 126.0 WB

2004 Chevrolet Colorado
Trim Info:
Rear Wheel Drive, Crew Cab
20 mpg city / 27 mpg hwy
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October 15, 2010, 8:09 pm

James F

Question: Feels like a boge down

Feels Like>> Vehicle is sluggish>> When I need passing power and press the accelerator to the floor>> Yes>> feels like i have loos of horsepower but engine tries to shut down. when acc after 1st gear it is boging down and not much power through rest of gears. my truck has the standard trans in it. 5spd for you to know

October 18, 2010, 3:13 pm

Ron W
Expert Mechanic

For all hard starting or engine performance issues, you should always start with the basics. Make sure the tune up items are done and check the charging and starting systems. The engine must have the basics done in order for it to be able to run correctly. Many things can cause this type of problem, and the simplest sometimes get overlooked.

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October 19, 2010, 7:51 am

James F

i did the basics and had the alt. checked just changed out the battery in march of this year. i setteled most of the boge down when i changed the oil but it still has trouble and i was going to work monday morning and it took me 20-25 mins to start up my truck. if the fuel pressure regulator is going out would it cause my truck to loose prime every now and then? and could it cause the boge down of the engine? or could it be bc of the fuel pump?

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October 19, 2010, 3:29 pm

Ron W
Expert Mechanic

Hard starting and low power can be caused by a bad fuel pump check valve. This is very common in GMs. Have the fuel pressure checked and do a 5 minute leak down test. If the pressure drops almost to zero, your check valve is bad. It can not be serviced separately. It's part of the fuel pump.

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