A strange fuel/spark issue

David Pertuz d.pertuz at gmail.com
Thu Oct 5 15:19:41 EDT 2017


Aha! Good bet that's it. My new injectors didn't come with o-rings, so I took them off the old injectors. I tried to be as careful as I could. At least I've got extras. What kind of lube is appropriate? 

David

Sent from my iPhone

> On Oct 5, 2017, at 1:41 PM, Christopher Scarpulla <cscarpulla at gmail.com> wrote:
> 
> Sounds like you nicked/pinched a lower o-ring when reinstalling the injectors. Pull them back out, give 'em a good looking over, and use a coating of lubricant when putting them back in. 
> 
> Fun fact: a torn lower o-ring can allow enough fuel past it to hydro-lock your motor. 
> 
> 
> 
>> On Oct 5, 2017 1:15 PM, "David Pertuz" <d.pertuz at gmail.com> wrote:
>> Ok, I spoke too soon - car is clearly running better, but still drinking gas through a fire hose and still dumping raw fuel all the way through the engine and out through the header gasket. I expected the new injectors to fix this! Will check #4 plug again and then dive into diagnosis. 
>> 
>> 
>>> On Wednesday, October 4, 2017, David Pertuz <d.pertuz at gmail.com> wrote:
>>> Installed new injectors and fuel filter over the weekend, problem solved. Idle is slightly rough so there's a little bit more diagnosis to do - now to see if my s**t fuel consumption goes back to normal!
>>> 
>>> David
>>> Chicago
>>> 
>>>> On Tue, Sep 26, 2017 at 7:45 PM, David Pertuz <d.pertuz at gmail.com> wrote:
>>>> Josh Palmer clued me in to some Bosch injectors that were on closeout for $25 each, so I just ordered new injectors - that's the same it would cost me to have mine sent out for cleaning, and there's no guarantee those would all be good. Some hose pliers are on the way so I can replace the fuel filter again, and after that all should be good. Well, except for the list of ten other minor things that have been invariant for ten years :)
>>>> 
>>>> Unfortunately my commute to work is going to go to shit next week, and I may find myself having to sometimes drive to work for the first time in a decade. If I do, the SE-R will gen the car for it! :)
>>>> 
>>>> David
>>>> 
>>>> 
>>>>> On Tuesday, September 26, 2017, Ben Fenner <fenfam at sc.rr.com> wrote:
>>>>> Sorry for the late reply, but I was going to say that a stuck injector sounds most plausible. A properly working ignition won't be able to light off the mixture, and you'll get the fuel running down the front if the head gasket isn't perfectly sealed.
>>>>> 
>>>>> Congrats on the Saab, and for getting the SE-R back on the road after such a long wait. I have had rod knock enough times to know it when I hear it, and at one time I was overly sensitive to the noise and found a minor rattle at ~5k RPM that I started to worry about. After a few months, I finally narrowed it down to a loose alternator pivot bolt! =D
>>>>> You never know...
>>>>> 
>>>>> -Ben Fenner
>>>>> 1994 Turbo SE-R
>>>>> 2000 M Coupe
>>>>> 
>>>>>> On 9/16/2017 4:54 PM, David Pertuz wrote:
>>>>>> Update: Injector #4 was stuck open. No idea how that happened, but when I replaced it the problem went away. Good!
>>>>>> 
>>>>>> 
>>>>>> David
>>>>>>> Chicago
>>>>>> 
>>> 
>> 
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