Car Mechanics (UK)

Cold start is­sue

- Bren­dan Flem­ing Hyundai · Austria · Belgium · Belarus

My 2011 Kia Venga 1.4 CRDI Eco­dy­nam­ics 2 with 25,000 miles on the clock has an is­sue with cold start­ing, par­tic­u­larly in the colder weather. It takes be­tween 5-10 sec­onds of cold crank­ing to get it to start. When I bought the car last year the start/stop didn’t work prop­erly, but a new AGM bat­tery sorted that out. There is no prob­lem with hot start­ing and the fuel econ­omy is great, av­er­ag­ing more than 65mpg. I think it could be a prob­lem with the glow plugs, as all the fuses are OK, but there are no er­ror codes stored. Can you tell me how to ac­cess the glow plugs and test them? There is a lack of on­line in­for­ma­tion about this par­tic­u­lar model or its sister car, the Hyundai ix20.

The glow plugs should be at the rear of the cylin­der­head and con­nected with a sin­gle elec­tri­cal rail which is plugged into the loom. The first thing to check is that the glow plugs are be­ing fed when the ignition is first turned on. By plac­ing a probe into the con­nect­ing plug with ei­ther a test light or volt­meter you should be able to de­tect if the glow plugs are be­ing cor­rectly fed. If they are, the next step would be to check the glow plugs them­selves, which can be done with­out re­moval by using an ohm­me­ter. First, dis­con­nect the top elec­tri­cal con­nect­ing strip, en­sur­ing you do not drop any of the fix­ing nuts – these can be fid­dly. Then, using an ohm­me­ter, place one probe on the cen­tre elec­trode and the other on the cylin­der­head. As a rule of thumb, the read­ing should be below 6 ohms, all the read­ings should be equal and a high resistance or an in­fi­nite read­ing will in­di­cate a faulty glow plug. The book time for re­plac­ing the glow plugs is 0.8 hours.

 ??  ?? The en­gine glow plug.
The en­gine glow plug.
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