Question about 1991 Mazda MX-5

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Idle problems i have just had the head gasket done on my euno roadster 1.6, 91... since getting it back i been have problems with the idle.. when cold, it start's but idle drops and stalls... but once the engine is warm the idle is fine and run good.... i'm thinking it somethink to do with the choke... any ideas?

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With the engine running at normal temperature, put a bent paperclip between gnd and ten in the diagnosis box (
Left side of engine bay above the shock tower)
Under a plastic bung on the throttle body where the big black tube fits in near throttle cable, turn the screw until the revs are about 800-900 rpm ,Remove the clip and your done!.




Posted on Aug 08, 2008

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Posted on Jan 02, 2017

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Hyundai Sante Fe v 6 2004 model With the radiator cap is off water pushes up when Idling. is this normal.


no
it indicates a head gasket / cracked head problem and the water is being pushed up by a build up of compression gasses
a compression test is in order

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P1188 and p0170 on bmw z3 roadster


p1188 is fuel pump and p0170 is same problem but with air flow sounds like drawing in too much air and not much fuel. pump might be shot.

hope this helps

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92 gmc 350 pickup....rough idle..have replaced MAP sensor, fuel filter,PCV valve, and idle control on throttle body...still having the problem


This could be a couple of things:
  1. Check that you have not got any vacum leaks between inlet manifold and cylinder head.
  2. Check your spark plugs and HT leads are in good condition and not worn, reset gaps. If worn replace them.
Worse scenario is the head gasket make be leaking water into a cylinder. Get a cylinder leakage test done to verify any manifold air leaks or faulty sealing head gaskets.
Good luck, let me know how you get on.

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OIL??


if you don't know what it's been run on then i would suggest a 10/40w or 10/50w semi synthetic

Jan 11, 2010 | 1992 Mazda MX-5

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Smoking on start up


sounds like the valve seats are getting dried out.you can some conditioner, they are rubber seals around the valves keeps from getting oil into the cylinder walls

May 10, 2009 | 1991 Mazda MX-5

1 Answer

Mazda eunos roadster HELP


I'm assuming no-one deliberately added petrol to the cooling water. You'll probably find there's a heap of oil in there too. It sounds like you've got a cracked head or a dead head gasket. Pull the head off and check. You could also do a leak-down test or a compression test to try and tell where the problem is.

A note on the side - the car probably overheated BEFORE the oil/petrol leaked into the coolant. If you continued to try to run the car, the overheating would have got worse and worse - resulting in a crack or the gasket being destroyed.

If you're not mechanically minded, you've probably got a rather large problem on your hands and need to get someone else to look at it.

Sorry to give you bad news...
Sherwin

Jan 01, 2009 | 1992 Mazda MX-5

1 Answer

1987 Volkswagen Jetta GL rough idling problem.


Hi!
So far you have done all but change the leads! This will help dramatically BUT if your head gasket is blown I'm afraid you'll have real difficulty in get it to run smooth as water/steam is possibly mixing with the fuel causing very poor ignition.
I did the same as you on a Golf as soon as the new leads were fitted Bingo a New Car, However there wasn't a head gasket issue.
Good Luck and A Happy New Year to you and your Family.
Paul 'W'

Dec 31, 2008 | 1987 Volkswagen Jetta

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