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post #16 of 27 (permalink) Old 02-01-2013, 11:51 PM
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1) is the crank sensor (reads the 60-2 tooth crank pulley)
2) is the VVT solenoid.
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post #17 of 27 (permalink) Old 02-02-2013, 12:19 AM Thread Starter
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Thanx, I'm not sure I have VVt on this car. Its an 89 FWIW. Fired it up this morning and still had a very slight poof in the manifold, very slight. Pouring rain so a ride is out of the sights right now. though its never been hard to start, it seemed a wee bit easier this morning to fire. ciao, chris

after some searching, and an edit here, I'm thinking I have VVT. Learned something tis morning therefore it is thusfara good day.

Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...

Last edited by jc96; 02-02-2013 at 12:39 AM. Reason: opened mouth too soon
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post #18 of 27 (permalink) Old 02-02-2013, 12:55 AM
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AFAIK all 75 and 164 twinsparks had VVT.
The early 164 TSs used the Motronic ML4.1 engine managment systems while the later ones got the newer Motronic M1.7 system, but even the earlier ones had VVT.
I think I can see the actuator in your photo, the black cylinder hanging off the front of your inlet cam?
[edit - I see you've found that already]

Had you swapped the leads to their correct spots prior to starting it this morning?
A pop in the plenum could be from a spark plug firing while that cylinder's inlet valve is still open during cranking - when I've had that happen I wouldn't describe it as a "little" pop though.

It could be a leaky injector, overnight it slowly dribbles a small amount of fuel so one cylinder is very rich during startup if it's sat for a while.
A bottle of injector cleaner in the tank might help, but if the injector is worn then it won't make much difference.

Or to test the spark, you could try disconnecting one of the HT coil leads before starting. If there's no pop then try disconnecting the other coil instead the next morning.
With one coil disconnected your engine should still run fine and smooth if the leads go to the right plugs.
If they're not in the right spot, it'll either run very rough or not run at all.
By disconnecting one coil it makes it a lot more obvious if there's a problem, because the twin igniton systems work as a redundant pair - you probably wouldn't even notice if one of your coils died while you were out driving as long as the other one was still working...
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post #19 of 27 (permalink) Old 02-02-2013, 01:19 AM Thread Starter
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Thanx, we're thinking alike. I noted a faint odor of fuel in the exhaust this morning after a very brief start up. Never had that before. Yes, the wires are now in their correct orientation, prior to starting this morning. Injectors are soon to come off and be sent to the OK shop in the states for a servicing, just because. Hadn't thought about the diconnecting one coil test but spark isn't an issue on this car. I'm searching my head mounted hard drive (scracthing forhead) and think the wiring has been this way (2 leads reversed) since I got the car a few years ago. I call myself thinking it weird that the leads were routed as they were when I changed plugs. Car was running fine so assumption was it was wired correctly. Thats the funny thing, the car has been running so so well, just a slight annoyance when at some speeds at some loads but not all the time. If I wasn't so anal, this would be a non-starter. Oh well, gives me something to dabble with, just wish it'd quit the rain. Ciao for now, chris

Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...
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post #20 of 27 (permalink) Old 02-03-2013, 12:24 PM Thread Starter
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Messed with the car today for a few hours. Learned: the front dizzy seems to be the main one. Disconnecting the coil from it kills the motor. Disconnecting the rear dizzy doesnt really affect anything. Disconnectig them while the car is running hurts. Those Blaster 2's put out some juice. Dumb me didn't learn the first time so just to be sure, I did it a second time on the rear dizzy. Now I'm dizzy!!

I ran the car and drove a bit on the main dizzy. I assume since it runs so well on this dizzy, my firing order on this one is good. I then looked over the wires from the second and they were jacked on the cap. So off with both caps, main rotor where plug 1 terminal was, other rotor 90 deg different. Reattached wires to 2nd cap using where that rotor was as #1 and remembered the rotation was cclockwise. Car ran pretty well but the low speed high gear shudder was worse. Started moving wires on 2nd cap one position CClockwise till I have it running really good, no low speed high gear stumble, no more stinky exhaust. Will fire it in the morning looking for the pop in the manifold and see. Then I can spend the rest of the week dinkin w/it and making my head spin!!

This would be so much easier if I could simply find an illustration of what wire goes to what plug for each cap. ciao, chris

Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...
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post #21 of 27 (permalink) Old 02-07-2013, 10:18 AM Thread Starter
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Well, been driving it all week and seemed to have cured may ails. No more popping, no more stumbling and runs really smooth all the way down to idle in fifth gear. Got her sorted. Exhaust scent is better but not gone completely. I haven't done the cipherin' but I'm betting I'm getting better fuel mileage for some reason. If I could just get the plug wires to stay on. Have to modify my little hat things I conjured up a few months ago. Ciao for now, chris

Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...
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post #22 of 27 (permalink) Old 02-07-2013, 10:29 AM
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That's some good news!

Given the info in this thread, I tossed together the following drawing. Are your wires and the drawing the same? If not, how do they differ?
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Jim

Series 2 USA 1750 GTV (in Series 1 European clothing)
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post #23 of 27 (permalink) Old 02-07-2013, 11:37 AM
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Quote:
Originally Posted by jc96
If I could just get the plug wires to stay on. Ciao for now, chris
Bin them and replace ...
Pete

'71 1750 Series 2 GTV:
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post #24 of 27 (permalink) Old 02-07-2013, 12:51 PM Thread Starter
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Thanx for the drawing, ill look over the weekend and post. Bin and replace, nah, they're new!! In a nutshell, they're the old type clip on the plug threads. One doesn't like to stay on so I wrapped the threads with copper filament and getting one to stay seated is lets say "challenging". Time for beddy bye. A domain. Ciao, chris

Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...
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post #25 of 27 (permalink) Old 02-10-2013, 04:59 AM Thread Starter
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Yessir Mr Papa, mine are wired as your illustration. All that fiddling last weekend put me there. Fired the car up and it runs on either dizzy now with the other disconnected. My plugs use the threaded ends as the photo I'll upload shows and the plugs boots keep coming off one or two of them. Been trying to figger how to keep this from happening and have wrapped the threaded ends with copper wire to give me a wee bit more grip. This works ok but one keeps popping off. So me, being the genius I am put the factory cover back on and doing so kinda pushes all the mess of wires under it as well as down so maybe that'll help. Though I really don't care for the look, I should have thought to do this earlier. I filled it Friday and will track consumption as I think I'll use a wee bit less fuel. Doubt I'll get much driving in this week as it is supposed to snow tomorrow and snow here is so rare, I dare not take the "nice" car out as these folks completely freak out when the roads are icy.

Anyway, pop or proofing is gone and car runs well. Plugs are burning well. Good Alfa day. Ciao, chris

Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...
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post #26 of 27 (permalink) Old 02-10-2013, 05:26 AM Thread Starter
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as alluded to....
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Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...
jc96 is offline  
post #27 of 27 (permalink) Old 02-19-2013, 10:52 AM Thread Starter
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My thinking that my mileage might improve beared out. Filled it and the math worked out to 30 mpg fartin' around the area and some hyway driving. Thanx for all'ya'll's thoughts and asst. ciao, chris

Maintaining my tenuous strain on reality.
89 164 2l Twin Spark, 2011 Tonka Dump

Recently added: an 89 75 (Milano) 1.6 litre w/44K on the klok.

Past loves:
79 Alfetta GTV w/Spica, my 1st Alfa

An 88 Graduate. Not really love but interesting nonetheless.

A 68 BMW 1602 - man do I regret letting that one go!

79 Scirroco, ex plowed into an illegally parked house with it...
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