VX trouble

[andy454]

In dry injectors I mean that the windings are not cooled by the fuel. I agree that there will be buildup on the outside of the injectors but we use a ball and seat. They can still cause some problems, but not nearly as bad as the old needle and seat type. That type needed cleaning all the time. Sure glad we got away from them. If you run a good quality fuel you should not see many problems. But things do happen. The easiest way to determine if there is lack of fuel is to use a pulse box connected to the injector and monitor the fuel pressure. When you pulse the injector you should see a certain amount of drop and compare it to all other injectors. If one is stuck you will see a difference. Not quite as good as an injector flow bench, but who has one of those.
P.S
Just talked to a senior engineer for the 3.2 vx and he agreed the design is self cleaning, but with a tank of bad fuel... could cause some problems.
My main point is just don't let the dealers rip you off saying you need one every service.

[Ironman pilot]

Bringing this old thread back, I have a question on some of the fuels with ethenal. I've been told that Costco fuel contains a good amount of ethenal as with 76. Is this a bad thing with these injectors? Just developed a problem like a lot of people here with intermittent stall on engine start. After driving with slight throttle, will clear up for a day or so. Just tried cleaning the idle control valve and throttle body plate area. I will go purchase a new ICV if the cleaning fails to cure the problem... While cleaning, is it bad to move the pintle in and out to clean the shaft?

[steelzeus]

I was always told that ethanol dries out your gaskets. its also not as efficient as regular gas is. its like 70 percent the energy that gas is. you shouldnt tell a diff in drivability. and ethanol is better for the enviroment

[Ironman pilot]

3 days so far and the engine starts and idles everytime... Prior, the engine would stall at least 2 times a day. Great info from u guys on this fix

[VehiGAZ]

Generally speaking, regional regulations dictate the types and concentrations of oxygen-enhancing additives like ethanol or MBTE, so it's probably not a "Costco gas" or "76 gas" thing. Check the pumps at several different gas stations to see what they have in them and how much - they will probably all be the same.

We used to have MTBE in our gas in CT, but they started finding traces of it everywhere in the environment, so they got rid of that junk and mandated adding ethanol up to 10%.

steelzeus is thinking that you're running pure ethanol, I think, not gas with ethanol as an additive

[Ironman pilot]

I talked to a Costco rep. He stated that the gas that they supply has about 10% to 15% ethenal. I travel to LAX on my commute to work and when I use Cheveron vs. Costco, I can definitely see a difference... The Cheveron gives me more miles.

P.S. Over a week and still running fine, no stalls. Cleaning the Idle control valve is the fix for this idle problem