I was just wondering....does anyone know how often you should have your fuel injectors cleaned? Also, does anyone know how much that would cost at a shop or dealer? I know putting additives in your gas can help prevent this, but my HHR has many miles I did not put on, and I'm sure the guy before me never put additives in...and I'm also more concerned about my Lumina, since it has 140k miles.

Thanks for the input!

You would need to rebuild them. There is no reason to clean them and additives that say they clean them are a waste of money. If they ain't broke.....:D

FWIW: I add a cleaner to my gasoline once a year. Been doing that since I was a young pup. But just in my injected rides, not my carbed bikes.

I use Lucas fuel treatment / UCL / cleaner at each fillup. 3 Oz / 10 gal. It is not intended as a remedial cleaner, but more so to supplement the detergency that may or may not be in your gas, depending on what brand you use. It also adds lubricity that has been pretty much stripped from modern gasoline. It is not solvent based, and will not fix clogged injectors. It's really a prophylactic measure. A gallon jug lasts me forever and gets the cost down very low.

For clogged injectors, short of pulling them off the car and having them professionally cleaned, backflushed, and tested at $15-30 each, adding a nice dose of toluene to a tankful is far more effective than most overpriced and ineffective solvent based fuel system cleaners. You also get a nice octane boost. It will not harm a modern fuel system, but it will remove paint, and it's highly toxic. Use with caution.

I would try a bottle of techron. It is around $7-13 a bottle but it works. Exgf had a olds alereo with bad clogged injectors I assumed. It would almost die when you would stop at red light and was fouling up one spark plug. It cleaned and cleared it up no problems since. just added bottle to somewhat empty tank add 12 gallons of gas.

My dealer "suggested" injection cleaning on my next visit. I have 54K miles on my '06. I don't know that I'll do it.

Unless you have already diagnosed a problem with fouled injectors "rebuilding" or, more properly, off-car, ultrasonic cleaning is not necessary.

I'll add that the idea of "rebuilding" injectors is a bit of a scam as fuel injectors in HHR engines cannot be field-serviced. They can be cleaned off the engine, but if "rebuild" to you, means disassemble, replace worn parts then reassemble, it can't be done.

As for pour-in additives for enhancing the "cleaning" action of gasoline, the detergent based injector cleaners are, by far, the best choice. Unfortunately, they're also the more expensive than the more common, solvent-based injector cleaners.

Examples of good detergent-based cleaners are:
Red Line Complete Fuel System Cleaner
Chevron Techron
Lucas Injector Cleaner

I've used the Red Line product for well over a decade. The "maintenance" dose is 4-oz for every 10 gallons of gas at every third-or-fourth fill-up.

The "shock treatment" is good in cases where you believe your injectors have a slight or modest level of fouling. Use three bottles of Red Line CFSC, one-bottle per tankful of gas for three fill-ups in a row.

:smile: Whatever the dealer wants for cleaning the injectors you can be sure it's way too much! They were trying to talk me into having it done at 15,000 Miles!! They said it was "Suggested" it should be done!!:roll: The owners manual "Suggests" 60,000 miles. That seems more reasonable, if even necessary then?

Injector cleaning is neither recommended nor even listed in the HHR Owner's Manual.

There are several ways to insure the injectors in your Ecotec 2.0, 2.2 or 2.4 stay clean enough for the engine to operate properly without having to pay a service shop for some type of on- or off-engine injector "cleaning" procedure.

1) Generally, use "top tier" gasoline. You don't have to use it all the time, but one out of three tankfuls might be a good idea.

2) If you decide to use lower priced, lower quality gasolines, use a detergent-based, pour-in injector cleaner on an occasional basis. A good schedule is 4-oz per 10 gallons of gas at every 3rd or 4th fill-up.

I've used procedure #2 for nearly 20 years with all my fuel-injected engines. The product I use is Red Line Complete Fuel System Cleaner. Several times in those near 20 years, I've removed sets of injectors from engines for inspection and flow testing. Each time, the injectors have appeared in near-new condition as far as discoloring, deposits or fouling and they flow as good or, in some cases, even slightly better than new injectors.

I have an 09 flexifuel and I think I remember reading in the flexifuels manual to not use any injector cleaners or additives.

If you can get your hands on any BG products get some BG44K. It is a great pour in additive for fuel. I have never been a fan of additives untill I started useing BK at my shop. It really does do a good job in my oppion.

I have an 09 flexifuel and I think I remember reading in the flexifuels manual to not use any injector cleaners or additives.

My earlier comments were made in the context of a non FFV, however, some of the materials used in FFV fuel sysetms are even more robust than those used in non FFV fuel systems so, from the standpoint of damage to fuel system parts, I wouldn't think injector cleaners would be an issue.

That said, what might be a problem is solevent-based cleaners or additives and the sensor in the system that measures the ratio of ethanol to gasoline.

If that's the case, I'd ONLY use a detergent-based injector cleaner in an FFV engine because the detergents used by those cleaners have chemisty similar to the detergents in the gasoline blended with the ethanol.

Sadly, flex-fuel HHRs are a useless increase in the cost of the vehicle because the amount of locations one can buy E85 are so small. Plus running the car on E85 is more expensive because the decrease in fuel mileage is not covered by a lower fuel cost.

Sadly, flex-fuel HHRs are a useless increase in the cost of the vehicle because the amount of locations one can buy E85 are so small. Plus running the car on E85 is more expensive because the decrease in fuel mileage is not covered by a lower fuel cost.

Perhaps now that the general public is figuring this out for themselves (because they have the Flex Fuel Cars, but never use it) the government will quit pumping excess money into a lost cause.

You should have seen me glare on my road trip from Denver at the large ethanol factory off the highway!:nuts: Now don't get me wrong, I think ethanol might have its place, but not in our vehicles. You can't use something that involves our food in our fuel. We use too much of both, and then the price skyrockets.

Now, let's just get ethanol out of our regular (e10) gasoline!

E85 by me in Nassau County, NY, 3 months ago when I first bought my HHR had an 83 cents a gallon spread over regular gas. I alternated between 1/2 tanks of E85 and then 1/2 tanks of regular. Worked out with decent milage by mixing and saving a few dollars. Now the cent spread is about 38 cents. Definately not worth the cost now...:red:

I was just wondering....does anyone know how often you should have your fuel injectors cleaned? Also, does anyone know how much that would cost at a shop or dealer? I know putting additives in your gas can help prevent this, but my HHR has many miles I did not put on, and I'm sure the guy before me never put additives in...and I'm also more concerned about my Lumina, since it has 140k miles.

Thanks for the input!
I had fuelinjection done at Pep Boys cost $79.00 done at 36,000 miles I dont know if it needed it but it cant hurt. now ay 41542 miles

You would need to rebuild them. There is no reason to clean them and additives that say they clean them are a waste of money. If they ain't broke.....:D

What he said.

My dad took his injectors out on his 91 Cutlass several years ago and took them to a diesel shop where the cleaned them out on a flow machine thingy. Charged him 20 bucks and it made a decent improvement in mpg.

I use Lucas fuel treatment / UCL / cleaner at each fillup. 3 Oz / 10 gal. It is not intended as a remedial cleaner, but more so to supplement the detergency that may or may not be in your gas, depending on what brand you use. It also adds lubricity that has been pretty much stripped from modern gasoline. It is not solvent based, and will not fix clogged injectors. It's really a prophylactic measure. A gallon jug lasts me forever and gets the cost down very low.

For clogged injectors, short of pulling them off the car and having them professionally cleaned, backflushed, and tested at $15-30 each, adding a nice dose of toluene to a tankful is far more effective than most overpriced and ineffective solvent based fuel system cleaners. You also get a nice octane boost. It will not harm a modern fuel system, but it will remove paint, and it's highly toxic. Use with caution.

Uhm... where are you getting toluene from???? lol!

Uhm... where are you getting toluene from???? lol!We sold 1 quart cans of toluene when I worked at ACE hardware. At the risk of starting a discussion similar to the acetone discussion, I'd be leary of the possible effects of toluene on the rubber or plastic parts in the fuel system. I have a canister cleaner for fuel injection that you pressurise with an air compressor the the vehicles operating fuel pressure and connect directly to the fuel rail. You remove the fuel pump fuse, run a dedicated cleaner through it until the car stalls, re install the fuse and you're done. Haven't used it on the HHR as I don't think it needs is yet at 55K mi.
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