[MR2] <MKIIT> Running rich/ cold-start injector question

[Bob S]

I got some NEW GM injectors from him for less than $15 each. I have no idea
if he has Toyota stuff but worth a call

Full Name:	Vaughn Grizzle
Last Name:	Grizzle
First Name:	Vaughn
Job Title:	Owner
Company:	Fuel under Pressure

Business Address:	
524 Sunset Circle
Columbus, KS 66725
USA

Business:	866-577 -FUEL (3835) or 620-429-2880

E-mail:	fuelin at columbus-ks.com
E-mail Display As:	Vaughn Grizzle (fuelin at columbus-ks.com)



-----Original Message-----
From: mr2-bounces at mr2.com [mailto:mr2-bounces at mr2.com] On Behalf Of Donald
Chalfant
Sent: Monday, November 12, 2007 12:39 PM
To: Kevin Parker
Cc: MR2 List
Subject: Re: [MR2] <MKIIT> Running rich/ cold-start injector question

Ought to be a bazillion injectors floating around out there at a very 
reasonable price. Getting a set and having them cleaned and balanced and 
then install and see if all your problems are cured.  Don't forget, new 
gaskets and O-rings are required for each injector.  I think Twosrus may 
have the Kbox stuff in stock.
----- Original Message ----- 
From: "Kevin Parker" <cavscoutmr2 at gmail.com>
To: "Donald Chalfant" <dkchal at datasync.com>
Cc: "MR2 List" <mr2 at mr2.com>
Sent: Monday, November 12, 2007 9:53 AM
Subject: Re: [MR2] <MKIIT> Running rich/ cold-start injector question


> You very accurately described my symptoms. It does require some extra
> cranking. I paid little attention to it since the starter is on its way 
> out
> (Aaron has some new brushes on the way to repair it, btw). I just figured
> the starter was causing those symptoms. Hm. I'll get it to a shop and get
> the exhaust analyzed to get a more accurate picture of what's going on.
>
> If it is an injector issue, what is the best/most cost effective solution?
> Buy new or have these rebuilt?
>
> Thanks!
> KP
>
> On Nov 11, 2007 9:30 PM, Donald Chalfant <dkchal at datasync.com> wrote:
>
>>
>>  All turbos run rich. I guess the question is "how rich is yours 
>> running"?
>> The backfiring (I'm presuming you are talking about popping and banging
>> upon
>> letting off the throttle?) could be caused by one of more injectors not
>> seating good and leaking fuel. The ECU is supposed to impose a fuel cut
>> when
>> the throttle is closed if the rpm is over _I think_ 1500 rpm. This could
>> account for what looks like excessively rich mixtures and
>> bang/pop/bang/boom.  If you do have a leaking injector, cold starting 
>> will
>> take additional cranking to get the fuel pressure built up.
>>
>>
>>
>


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