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rough idle
by
RabbitJockey
on 18 Oct, 2006 18:00
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any reasons for a rough idle on a 1.6 td? my car is at 1000-1100 idle and it seems rough, and i know before it seemed fine and i had at liek 700 and i couldn't even feel it, it's not missing or anything and it runs strong... could be injectors or maybe bent valves or something?
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#1
by
sethyboy85
on 18 Oct, 2006 18:25
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It's been cool out here lately, glowplug out?
rough warm or rough cold?
What kind of fuel have you been running?
How much boost were your running last night? :wink:
Pull an injector and see if the seal is carboned up (bad spray pattern will result rough idle but smooth driving)
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#2
by
burn_your_money
on 18 Oct, 2006 19:02
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are all your motor mounts good?
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#3
by
RabbitJockey
on 19 Oct, 2006 19:44
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i know both trans and the front mount are all good, and the passenger side should be decent as i remember when we did the motor swap, it does it warm and cold, but it's a relatively new thing. so i wouldn't want to think it's the injectors...
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#4
by
burn_your_money
on 19 Oct, 2006 19:49
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Run a compression check and see if you have a shot cylinder
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#5
by
1slowvw
on 20 Oct, 2006 10:09
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My engine had a really rough idle after i overheated the thing, turns out i had warped the head and scored a piston. The thing ran but it was rough.
1SlowVW
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#6
by
jtanguay
on 21 Oct, 2006 21:36
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mine went downhill from an overheat too... stupid fan died on me... one reason I hate a/c models...
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#7
by
Powjetta
on 23 Oct, 2006 07:32
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I replaced the front mount and the passenger side mount on mine and it really made a difference. I couldn't tell til I had them out side by side how much tighter the new mount was. If it's just at idle and not when the rpm's are up then I would replace mounts.
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#8
by
RabbitJockey
on 25 Oct, 2006 18:07
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it could be the motor but this thing runs strong and pulls like a mule, puts a hurting on alot of cars in town haha
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#9
by
jtanguay
on 26 Oct, 2006 08:16
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right before I had my engine fixed from the overheat, it would shake/vibrate pretty bad. it just kept getting worse too
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#10
by
jtanguay
on 26 Oct, 2006 17:20
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i will add that my older '86 jetta td vibrated pretty bad. we're talking some mad dash vibrations. i thought for sure it would vibrate itself to death :lol: but other than hard cold starting, it just kept purring along! it went to its grave before i could kill it myself though
turbo in that thing was weird too... kicked in at 100km/h and brought me up to 110km/h hehe try explaining that to the officer... and i attribute all of that to bad compression. hopefully your motor doesn't have bad compression