Hesitation while Cruising, '74 2.0l D-Jet |
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Hesitation while Cruising, '74 2.0l D-Jet |
Nogoodwithusernames |
Jun 14 2021, 04:44 PM
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#1
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Member Group: Members Posts: 239 Joined: 31-May 16 From: Nor-Cal Member No.: 20,051 Region Association: None |
Had the 914 out a couple times this weekend and noticed some hesitation while at light throttle cruising, say at like 25-30mph in 3rd.
I just recently did a valve adjustment and checked timing per the manual, had to clean up the points a little bit as one side had a little bit of a 'tit' starting to grow. Other than the hesitation it seems to be running well still, maybe a bit on the warmer side compared to what it used to be? (Also first time out this summer, ran it a few times this spring when it was nice and cool) But it has good power, and no audible changes in tone. What should I be checking first? Timing looked like it was right on the mark with vac line off and at about 3-3.5k rpm so I don't *think* that's the issue. |
Nogoodwithusernames |
Dec 14 2023, 12:38 PM
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#2
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Member Group: Members Posts: 239 Joined: 31-May 16 From: Nor-Cal Member No.: 20,051 Region Association: None |
Well it's been about two years, life is busy as we all know, and messing with other hobbies and moving etc etc. I'm trying to get this running better again. It was a bit better for a while, but I also wasn't driving a ton and it wasn't so bad to be bothersome. I think it's gotten a bit worse now after not being driven as much.
I can remember how nice it drives when it's in tip top shape and would like to get it there again. Especially now that I have been driving the 914 to work a lot more lately since my 98 Isuzu pickup daily doesn't like to start on our cold (relatively) mornings we've been having. (If anyone has any thoughts on this too I'm all ears! cranks and cranks and cranks but won't catch till it's warmed up. Coil going bad?) Over the weekend I checked timing, and fixed a possible vacuum leak at the stupid stacked elbow coming off the plenum. (Why not just have two nipples coming off the plenum???) The rubber was getting a little hard on the elbow so I used a dab of oil safe RTV to glue in the brass tubes since those were a bit loose. Do I just go through everything again, TPS, distributor (clean and lube)? Doing everything over just feels like (IMG:style_emoticons/default/headbang.gif) Perhaps I'll unplug the TPS on the way home to see if that could be the cause. One thing I haven't done is check fuel pressure in a long while. I haven't adjusted it either but perhaps the regulator has lost a bit over the years? The temp sensor in the head is new, I believe 914 rubber brand, as of a few years back. |
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