Who's up on aircooled stuff? got a question... - page 2 - General - VWDiesel.net The IDI, TDI, and mTDI source.

• #15 by air-cooled or diesel on 10 Sep, 2014 05:39
• you didnt mention a miss; that i could tell; vac leak=bad running. only want like 2 vac (small) lines; 1 for dist; and 1 for vac gauge; any more can possibly be deleted, unsure myself of the jetronic youve got. or carbs, or liters. vac leak can be flushed out with something like carb spray. etc. run and clean out a little, and re connect, possibly cleaning all units. 1 thing i did was pull apart and lubing my dist; plenty of things to do on weekends, and many combos. what i thought i heard was 914 was very good cornering. engine is almost exact to a t/4 motor, and plenty of parts --were- available
• #16 by air-cooled or diesel on 10 Sep, 2014 13:55
• what i havent said yet is; if running engine and you get some spray in hoses/intake; i rev up and let revs come down and then spray and engine will misfire some, keep it to some. start revs at 1500 or so and when dropping use spray.
• #17 by air-cooled or diesel on 11 Sep, 2014 17:05
• ;;for instance; another way of putting it; carb spray will clean out carbs and some other things, in vac lines and the module(vac), you can use some, a sip or 3 @~1300rpm, i dont know if vac rubber lines can handle carb spray, but some/a little can do some flushing. such as down the throttle throat; if you start with a clean engine to start it can help keep intake some clean, turn advance back and a couple of short sprays with throttlebodies a little open. (1300rpm apx.).will missfire a few times. on a engine that hasnt been done on and you do it--all that carbon and build-up will be moved and will continue to 'bleed'. so what im saying-not good.  and for flushing carbs; if you can bottle feed, and keep bowls full you can mix in and flush out carbs; other option, breakdown carbs. the thing with carbs is you have to get all jets, with out knocking engine. (at least too much, will missfire) and hotspots will detonate.(o fcourse retard dist).
  i betting the book says donot use a carb spray on fuel injection, i do suppose the fine parts can be too sensative, and can also attract build-up. 
  
  like i mentioned cleaning vac and modules- vac; alot of cleaning on unmaintenenced system may cause you problems in certain areas; try a squirt or 3 to start and see how it goes.
  running this carb spray into combustion can be a real problem if not done on a good motor/or done right!!
  
  i had a TIII with that stupid jetronic injection(i forget which one), so i did a little work on it and forgot i disconnected one of the clutter of vacuum lines/modules, and for a week i couldnt figure out what was wrong, i mean i drove to school 1 day and someone was saying to me the flame i was spitting out of my muffler. i did find the problem; duuhh the vac line i forgot about.
  also had a couple of other jetronics, one got stripped (inj+ecm) for some carbs, unfortunately a stock type4 2.0l motor has carb limits, i think my dad went big and with out some type of warm up it wouldnt run right, he may have gone with 44dells or bigger, although i had thought they were 44's. lot of carb. the intake always ran too cold.
  
• #18 by air-cooled or diesel on 13 Sep, 2014 07:46
• CB has bolt ons, like for a type I i had 1.25:1 rockers, would even help with stock cams, and heads, with a bigger cam was a good part for mid-lift, better than 1.4:1 rockers, too much lift/rotation. 1.25:1 rockers are made by VW for type I's. i dont think they work with hydro cams, and just type I.
  
  -edited- ammended.;;
• #19 by Patrick on 16 Sep, 2014 03:00
• Thanks but if you look you'll see I said I found the issue...
  all good info though. went through a lot of the same stuff before I fouund the leak. It needed some of the work I did, running better now than it has all summer.
  
  As for handling, one of the best cornering cars to ever come out of porsche/vw.