Perhaps the cold start valve needs a little cleaning? Maybe replacement? Just a thought. ----- Original Message ----- From: Larry L Meyer <llmeyer@juno.com> To: <vanagon@GERRY.VANAGON.COM> Sent: Friday, July 28, 2000 12:57 PM Subject: Hesitation & Slow Starts
> I have a 86 vanagon with 128,000 miles. Just replaced the engine with a > new rebuilt from Boston Engine. Here's the problem: When I first start > it up after sitting overnight, everything is normal. Idles at 800-1000 > rpm but "bucks" a bit until it has run for a minute or two. After it has > warmed up to normal operating temperature, it will idle at about 2000 > whenever I'm stopped at a red light. Then when I take off from the > light, it will hesitate and start very slowly as if it is starving for > fuel until I get it up to about 2500 rpms. After that it runs and sounds > normal. I have replaced the O2 sensor, re-checked the timing (its > correct), and have replaced the distributor cap. I also tested the idle > speed control and it seems okay---vibrates like the Haynes manual says it > should. So, what do I check next? Any suggestions from the list? > Thanks in advance. > > Larry in Lincoln |
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