Vapor lock is your engine talking to you. It is telling you the engine is running hot. Most vapor lock happens inside the fuel pump which is cooled by engine oil. #1 are you running premium fuel???? you need to run premium. Combustion temps are much higher on air cooled engines. VW head temps are from 260 to 320 running. Water cooled head temps are 160-190f. So you need premium fuel for the higher pressures created by the additional heat. #2 is that a dog house cooler with the back door and all the tin on it? Need dog house....if you have one already you can add an additional cooler with a CB performance full flow oil pump and cover. My oil temps are below 200 on the freeway all the time. Even when cruising at 2800 rpm. At 3200rpm I never have vapor lock. When the guy was driving your bus he was masking the issue with more air. Driving it at higher RPM....there is a balancing act on these engines. Too many RPM and that can cause issues too. Like Blowing oil out the rear slinger. Check jetting. your engine may be running lien. You should get a laser temp and check head temps. 260 to 320 should run best around 280 or so. Timing could be too far advanced. 28-32 for most applications.
A NJ VW Society member told me to use premium gas to keep it cooler. So I am using premium gas now. I was using middle grade gas (Between regular and premium) before. My engine has a dog house cooler. It is covered properly. Where is the best spot to have oil temp sensor?
@@VWBusLife The one that replaces the dipstick is good. Head temp is the best thing to know. There are a number of things that could contribute to the running hot issue. Air fuel mixture. Check your main jet. I think Cadrons like a 130 main jet just like the Weber's. for a smaller engine. Try richening it up then lien it out until it is not running so rich it loads up. Then you should be in a safe zone.....When the guy was running your bus at a higher rpm he was masking the issue with more air. Which is kind of the right thing to do when it is getting hot but you have an issue that needs to be repaired. The other thing it could be is air ports on your heads are not opened up. Heads might be restricted. which would require removing the engine and checking them with the tin off. I would start with mixture. then move to the next item. I did put up a new video for you to watch. But I did skip some items as I forgot to mention them.
Moving the fuel filter away from hot metal was a good idea to prevent vapor lock. Also, if you do not have all the sheet metal (engine tin) installed correctly, the air temperature inside the engine compartment can become hot and lead to vapor lock.
Hello! Glad to see you resolved the overheating problem 👍 I like using "ethanol free" gas when possible. It appears that the 10% ethanol gas vapor locks or "boils" easily in warm weather. Buses are noisy and slow, but I still like them 😄 Best Wishes!
Love your style of videos. Such great stories. Something to consider is that you are not running stock engine components, so this can play a factor in engine tempurature. If your bus came stock with a 1200 single port engine any specs that your find are probably for the stock engine. I forget what engine you have, but I'm going to assume a 1600 dual port engine. So you might need to look up data for that size engine. Also you have dual carbs so that could play a factor and I"m not sure if you have a stock transmission. All of these variables can have an impact. Make sure you have all of the engine cooling tins properly installed and that should help as well. Again, always feel free to message me if you have any questions.
Thank you very much giving me things to think about. The engine I have is exactly what you say. I think I have stock transmission and it is with RGBs. Thank you for your help.
Great video, I was nervous about my bus too and added a temp gauge, it almost always is around 220F at freeway speeds and it really doesn’t go much above that. Hope the alternator fix goes smoothly! 大変よくできました！
What size is your engine? I have a 1600cc with reduction boxes on my bus and it cruises around 50 to 60 mph. In my old handbook it states 59mph top speed.
Previous owner said my bus has 1600cc engine. Mine also has the reduction gear boxes and I feel 50 mph is good speed. 59mph top speed make sense. Thank you for your help.
Ive had a 67 bus for over twenty years and never had trouble with overheating, i have spent many many hours cruising at over 100 klm/h and im in Australia. Ive had a few engines in my van over the years but ive never had a problem. I have NEVER used anything but 92 octane fuel and have towed a 80kg campervan.
Another great video my friend. If you are not familiar with Mike Fn Garage, check out his channel. He recently posted a video addressing overheating. He has videos explaining everything VW. I just watched the video about overheating and I think it might answer your questions. Keep rolling!
Vapor lock is your engine talking to you. It is telling you the engine is running hot. Most vapor lock happens inside the fuel pump which is cooled by engine oil. #1 are you running premium fuel???? you need to run premium. Combustion temps are much higher on air cooled engines. VW head temps are from 260 to 320 running. Water cooled head temps are 160-190f. So you need premium fuel for the higher pressures created by the additional heat. #2 is that a dog house cooler with the back door and all the tin on it? Need dog house....if you have one already you can add an additional cooler with a CB performance full flow oil pump and cover. My oil temps are below 200 on the freeway all the time. Even when cruising at 2800 rpm. At 3200rpm I never have vapor lock. When the guy was driving your bus he was masking the issue with more air. Driving it at higher RPM....there is a balancing act on these engines. Too many RPM and that can cause issues too. Like Blowing oil out the rear slinger. Check jetting. your engine may be running lien. You should get a laser temp and check head temps. 260 to 320 should run best around 280 or so. Timing could be too far advanced. 28-32 for most applications.
something is wrong if your having vapor lock especially back east where temps are much lower than in CA.
A NJ VW Society member told me to use premium gas to keep it cooler. So I am using premium gas now. I was using middle grade gas (Between regular and premium) before.
My engine has a dog house cooler. It is covered properly.
Where is the best spot to have oil temp sensor?
@@VWBusLife The one that replaces the dipstick is good. Head temp is the best thing to know. There are a number of things that could contribute to the running hot issue. Air fuel mixture. Check your main jet. I think Cadrons like a 130 main jet just like the Weber's. for a smaller engine. Try richening it up then lien it out until it is not running so rich it loads up. Then you should be in a safe zone.....When the guy was running your bus at a higher rpm he was masking the issue with more air. Which is kind of the right thing to do when it is getting hot but you have an issue that needs to be repaired. The other thing it could be is air ports on your heads are not opened up. Heads might be restricted. which would require removing the engine and checking them with the tin off. I would start with mixture. then move to the next item. I did put up a new video for you to watch. But I did skip some items as I forgot to mention them.
I run 89 e0 in all my cars, would that be enough for my van?
@@Mikefngarage Thank you! I will check your video.
Moving the fuel filter away from hot metal was a good idea to prevent vapor lock. Also, if you do not have all the sheet metal (engine tin) installed correctly, the air temperature inside the engine compartment can become hot and lead to vapor lock.
Thank you.
Hello! Glad to see you resolved the overheating problem 👍
I like using "ethanol free" gas when possible. It appears that the 10% ethanol gas vapor locks or "boils" easily in warm weather. Buses are noisy and slow, but I still like them 😄
Best Wishes!
Can you imagine our situation here in Brazil, we have 27% of ethanol and will increase to 35% !!!!!
Thank you for your comment. Hard to find ethanol free gas around here (NJ)...
@@ANDRE-VW Amazing, I didn't know. I guess we are lucky here in the US, with ONLY 10% of ethanol.😅
@@VWBusLife Yes my friend, you are really lucky.
Love your style of videos. Such great stories. Something to consider is that you are not running stock engine components, so this can play a factor in engine tempurature. If your bus came stock with a 1200 single port engine any specs that your find are probably for the stock engine. I forget what engine you have, but I'm going to assume a 1600 dual port engine. So you might need to look up data for that size engine. Also you have dual carbs so that could play a factor and I"m not sure if you have a stock transmission. All of these variables can have an impact. Make sure you have all of the engine cooling tins properly installed and that should help as well. Again, always feel free to message me if you have any questions.
Thank you very much giving me things to think about. The engine I have is exactly what you say. I think I have stock transmission and it is with RGBs. Thank you for your help.
お疲れ様です♪
私もバスを購入しましてちょうど明日納車予定なので、参考になります。
結構長くオーバーヒートに悩まされていたかと思いますが、これでひとまず解決できてよかったです😊
明日ですか?!!! それは楽しみですね? 何年式ですか？
@@VWBusLife 割と綺麗な65年です♪
実は初めての愛車です🤣 Facebookでも明日グループに投稿します！
@@takmiller6893 65年ですか。いいですね。ウチのは61年なので、燃料計がなかったり、互換性がない部品が有ったりと色々面倒です。明日写真見られますね、楽しみ
@@VWBusLife ありがとうございます😊
たしかに低年式になると燃料系がなかったりパーツの調達が難しいものがあったりしますよね。でもマンゴーグリーンのカラーにスモールテールのバスの見た目はとても良いです！うちのは、明るめの青と白のツートンです♪
I have one of these diipsticks in my 1967 Porsche and it works pretty good. These little air cooled engine can take a lot of heat!
I am learning how much heat it can take. Thank you for your support.
Great video, I was nervous about my bus too and added a temp gauge, it almost always is around 220F at freeway speeds and it really doesn’t go much above that. Hope the alternator fix goes smoothly! 大変よくできました！
Im running under 200....with 2 coolers. with the oil temps that high it might have fuel pump vapor lock issues.
@@Mikefngarage Thank you. Where do you place the oil temp sensor? Where is the best location to get the temp reading?
BRAVO!!! good video
Thank you for watching and supporting me.
What size is your engine? I have a 1600cc with reduction boxes on my bus and it cruises around 50 to 60 mph. In my old handbook it states 59mph top speed.
Previous owner said my bus has 1600cc engine. Mine also has the reduction gear boxes and I feel 50 mph is good speed. 59mph top speed make sense. Thank you for your help.
Ive had a 67 bus for over twenty years and never had trouble with overheating, i have spent many many hours cruising at over 100 klm/h and im in Australia. Ive had a few engines in my van over the years but ive never had a problem. I have NEVER used anything but 92 octane fuel and have towed a 80kg campervan.
That is nice. I believe the bus was designed to be like that. Thank you for your comment.
Love the content. keep buggin. new friend here.✌️
Thank you very much for your support.
Always be much more concerned with TOP END TEMPERATURE.!
What does "Top End" mean? Thank you for your help.
@@VWBusLife cylinder head temperature; particularity at the #3 cylinder. Watch that instead!
yea cylinder head temp tells you where the root of the problem is. Oil is secondary. If your head temp is too high it will make the oil temp go up.
@@arminyack Thank you very much.
お疲れ様です！
私もショップの人に「もっとシッカリ踏み込め」って言われた事あります。
運転手が気持ちよく走ってる時より少し強めに踏んだ方がバスには良いのですねぇ😅
もしオイルが熱でせん断されるとドレンボルト辺りから滲み出て来るらしいです。滲み出るのを見た事は無いけど。
ちなみにうちのバスの油温はいつも200℉いくかいかないかくらいです。
このまま良い状態を維持していきたいですね🎉
コメントありがとうございます。私も初めの頃「もっと踏み込め」と言われた事がありました。200℉ぐらいで安定しているのですね。油温のセンサーはどこに付けていますか？
@@VWBusLife
うちのはプレッシャースイッチのところにアダプターを付けて油温・油圧をとっています。
精度の高いセンサーではないので、いつもより油温が高い低いで異常が無いか判別する材料にしているくらいですね。
油温をとる場所でも結構変わるみたいですからあまり神経質にならなくても良いかもです。
Putting a bunch of wood clothespins on the fuel line cures the vapor lock.
Really? Never seen that... very interesting. Thank you!
@@VWBusLife Old trick - has to be on the metal part of the fuel line before the fuel pump. 🙂
@@VWBusLife Worked for me in the '70s on a 1966 VW Deluxe bus. An old timer told me about it.
@@TheDasbull I see, on the metal part, that make sense.
Another great video my friend. If you are not familiar with Mike Fn Garage, check out his channel. He recently posted a video addressing overheating. He has videos explaining everything VW. I just watched the video about overheating and I think it might answer your questions. Keep rolling!
Yes I follow Mike Fn Garage. I just watched the video. As usual I learned a lot from it. Thank you.