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Matt, Engineer
Category: Car
Satisfied Customers: 20373
Experience:  Honors degree in Mechanical Engineering, worked 8 years as a Formula 1 engine engineer.
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2004 suzuki: carry wont start unless pulled runs rough until warm help

Resolved Question:

am trying again 2004 suzuki carry wont start unless pulled runs rough until warm help
Submitted: 4 years ago.
Category: Car
Expert:  Matt replied 4 years ago.

this could also be incorrect fuelling due to a faulty water temp sensor. If this is the problem then the ECU will never add the 'cold start' extra fuel required if the car starts OK when warm then I 'd look into changing the sensor.
Also check over the sensor wiring for any damage and for corrosion on the connector

And its worth checking for air leaks after the mass airflow meter -
Any air dragged after the meter isn't 'seen' by the ECU and so not compensated for, causing rough running.
Check the hose clips for tightness and inspect the trunking for any cracks or splits and also all the vacuum system, the small bore pipes and fittings for cracks and missing parts.
The best way to locate a leak is to have the engine running and warm and then spray lighter gas around each joint in turn. If the engine rev's up you've found your leak.
Work your way through each possible joint one at a time and you should find it. I use a slightly flattened piece of brake pipe and some rubber hose from the can of lighter gas to provide a spraying 'wand' and allow a direct blast of gas into each area, especially those difficult to reach with large implements.
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