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Old 03-06-2008, 06:16 PM
 
177 posts, read 545,728 times
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what are signs of dirty fuel injectors. I am getting hesitation and poor gas millage. My mechanic said tht it looks like dirty fuel injectors and I should have a fuel injector cleaning service (cleaning injectors while still on car.). The car is a honda accord 2000 accord only 25,000 miles but 8 years old, but is it possible to have dirty injectors at this milage, or at this age of the car. Could my gas filter also be dirty.

I just had a timing belt replacement by the dealer,and I thought it was caused by a misadjustedted but my mechanic said it looks okay as my car is ideling smooth and there is no engine check light and it does not look like a notch was missed when the timing belt was installed. There is no timing adj like the old cars with a timing light and distributor rotateing

Last edited by captnemo; 03-06-2008 at 06:26 PM..
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Old 03-06-2008, 10:51 PM
 
Location: ID
2,065 posts, read 4,265,539 times
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You can use Sea Foam or Marvel Mystery Oil (see can for directions) to clean injectors. Or you can pay your dealer $150 to do what may be the same thing.

I think it's good to occasionally take the car out (once thoroughly warmed up) and give it a couple of full throttle runs from a slow roll up to 70 MPH or whatever the limit is. Freeway onramps are good for this. Cars need exercise, and this isn't that hard on the systems.

That's a short life for a timing belt. Is it a belt or chain?
I'm assuming you did it by the book's schedule, which typically will have a miles/years timeout limit.
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Old 03-07-2008, 07:18 AM
 
992 posts, read 2,329,107 times
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I throw a bottle of Techron into the tank every oil change. I've never had a problem with an injector.
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Old 03-07-2008, 07:51 AM
 
Location: DFW area
1,158 posts, read 2,293,433 times
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I've got a 2004 Toyota Corolla with approx. 80,000 miles on it; still has the original timing belt, and gas mileage has been really bad the past few months; maybe because of the cold? Anyway, should I have the injectors cleaned? It's my wife's car and she is beginning to drive more on the highway everyday so maybe that will help gas mileage a little.
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Old 03-07-2008, 07:58 AM
 
992 posts, read 2,329,107 times
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Only symptom is the mileage? No hesitation or miss or anything?

Check your tire pressures.
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Old 03-07-2008, 08:09 AM
 
Location: DFW area
1,158 posts, read 2,293,433 times
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Quote:
Originally Posted by billb7581 View Post
Only symptom is the mileage? No hesitation or miss or anything?

Check your tire pressures.
I just had the tires checked and aired up to the specs, but it does need some new tires as well..
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Old 03-07-2008, 05:53 PM
 
Location: California
9,665 posts, read 10,863,732 times
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Quote:
Originally Posted by captnemo View Post
what are signs of dirty fuel injectors. I am getting hesitation and poor gas millage. My mechanic said tht it looks like dirty fuel injectors and I should have a fuel injector cleaning service (cleaning injectors while still on car.). The car is a honda accord 2000 accord only 25,000 miles but 8 years old, but is it possible to have dirty injectors at this milage, or at this age of the car. Could my gas filter also be dirty.

I just had a timing belt replacement by the dealer,and I thought it was caused by a misadjustedted but my mechanic said it looks okay as my car is ideling smooth and there is no engine check light and it does not look like a notch was missed when the timing belt was installed. There is no timing adj like the old cars with a timing light and distributor rotateing
Did this start right after the timing belt change? If so I would return it to the dealer and have them check their work, I believe if your injectors were that dirty your car would have a check engine light on. there are many things that will cause your symtoms, a few are plugged air filter or a very restricted exhaust like a plugged converter. If you've run some real bad gas the injectors could be fouled and need a cleaning but I've had vehicles with well over 100,000 miles that never needed it. I would take it to the dealer, cars are easy to check on a good computer system as they have, it could save you a ton of money in the end.
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