[Mgs] Bad Fuel Question

i erbs eyera3000 at gmail.com
Tue Jul 23 11:14:48 MDT 2019


My car ran rough, backfired and coughed under load, but did ok at low
speeds. Replaced the condenser , ran fine for a few hundred miles, then
failed again.  Both were new Lucas units. Put in an old stock one, car ran
fine until I replace with HD condenser.

On Tue, Jul 23, 2019, 9:45 AM Max Heim via Mgs <mgs at autox.team.net> wrote:

> Rough running, which was the stated symptom, as opposed to “not running”.
>
> --
> Max Heim
> '66 MGB
>
> On Jul 23, 2019, at 9:15 AM, Charley Robinson <Charley38 at twc.com> wrote:
>
> What do you mean by "intermediate state"?
>
> CR
>
> On 7/23/2019 11:03 AM, Max Heim via Mgs wrote:
>
> I understand how it could make the car inoperable. I don’t see an
> explanation for an intermediate state.
>
> --
> Max Heim
> mvheim at sonic.net
>
>
>
> On Jul 23, 2019, at 6:53 AM, Charley Robinson <Charley38 at twc.com> wrote:
>
> Not true, Max.  When the points open, the condenser discharges through the
> coil in order to perpetuate the spark.  Without the condenser the engine
> may not even start.  Try it some time. :-)
>
> CR
>
> On 7/22/2019 1:18 PM, Max Heim via Mgs wrote:
>
> How do bad condensers cause rough running? All they do is prevent the
> points from burning. Oh, you are saying the points are burnt.
>
> --
> Max Heim
> '66 MGB
>
>
>
> On Jul 22, 2019, at 11:10 AM, i erbs via Mgs <mgs at autox.team.net> wrote:
>
> could also be a bad a condenser. Could coincidental, not causational. How
> old is the condenser? Even if newish, there are lots of crappy new Lucas
> parts out there. I had three bad ones with similar results, until replaced
> with  a Distributor Doctor HD condenser.
> Ira Erbs
> Portland,OR
>       _______                                  _______
>      (______ \____1959 BN4____/ _______)
>          (_________________________)
>           BT7 engine and disk brakes
>
>
> 1967 MGB  [image: MG]
>
> A racing car is an animal with a thousand adjustments. Mario Andretti
> Please excuse random auto corrects and misspelled words
>
>
> On Mon, Jul 22, 2019 at 10:36 AM David Breneman via Mgs <
> mgs at autox.team.net> wrote:
>
>> I've never encountered a "bad fuel" problem before, so I'm looking
>> for some confirmation (or not).  The local Mom-without-Pop store put
>> in new pumps, and one of the things they're offering now is 92 octane (US)
>> alcohol-free gas.  I had about a quarter tank in my MGA (w/MGB high
>> compression engine) so I went to fill up.  The pump with the alcohol-
>> free gas was out of order!  So I put in three gallons of regular 92
>> octane, and about 1/4 mile from the station started experiencing a lot
>> of misfiring, mostly when accelerating in 3rd and 4th.  I continued
>> driving like this for about 20 miles to see if it would clear up and it
>> never did.  I can't imagine it's anything but the fuel, but I've never
>> encountered "bad fuel" situation like this in 44 years of driving.
>>
>> The fact that it started about 1/4 mile after leaving the station seems
>> like pretty good evidence.  Any other possibilities?  Is there any option
>> other than to just burn through this half tank of gas?
>>
>> Thanks!
>>
>> David Breneman  david_breneman at yahoo.com
>> _______________________________________________
>>
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