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Model specific boards => Golf mk4 => Topic started by: smithy8979 on 30 January 2011, 13:44

Title: 1.8 20v t engine problem
Post by: smithy8979 on 30 January 2011, 13:44

hi there. just wondering if any1 can help with my little problem.

ive just brought a v reg 1999 golf gti. as i was driving it there was a woosh noise (as if aload of boost has come out somewhere.) and then cut out, straight after that it fired up and then died straight away. since then it will turn over and not fire up. it has no compression what so ever. all the plugs are fine so they have not smashed through the pistons. im still getting a decent spark and fuel aswel.

just wondering if anyone had any ideas?

thanks

Title: Re: 1.8 20v t engine problem
Post by: richw911 on 30 January 2011, 13:54

Boost leak. Sounds like a pipe has come off - especially check the inter-cooler and pancake pipes  :smiley:

Title: Re: 1.8 20v t engine problem
Post by: rio_gti on 30 January 2011, 13:54

charge pipe blown off of somewhere

check intercooler connections and also where the pipe goes from the turbo to the intercooler

Title: Re: 1.8 20v t engine problem
Post by: topher on 30 January 2011, 14:29

Quote from: smithy8979 on 30 January 2011, 13:44

it has no compression what so ever.

if you've done a compression test and getting 0 on all 4 cylinders then chances are you've got bent valves. Check the timing/cambelt

Title: Re: 1.8 20v t engine problem
Post by: smithy8979 on 30 January 2011, 15:03

cheers for your help, valves are all fine as i have taken the rocker cover off and the cams are turning as they should.

Title: Re: 1.8 20v t engine problem
Post by: Wazzzer on 30 January 2011, 16:12

doesn't mean they are fine...

Title: Re: 1.8 20v t engine problem
Post by: Mrwebster on 30 January 2011, 16:15

Quote from: smithy8979 on 30 January 2011, 15:03

cheers for your help, valves are all fine as i have taken the rocker cover off and the cams are turning as they should.

lol..   do a compression test with a decent screw in tester.
remove all teh spark plugs, put the gauge into the cylinder crank the engine over for 5 seconds . check the reading,  move to next cylinder,

should be between 145  and 190 psi on all cylinders, with a difference no greater than 10% on all 4

Title: Re: 1.8 20v t engine problem
Post by: smithy8979 on 30 January 2011, 16:33

thats how i did the compression test mate

Title: Re: 1.8 20v t engine problem
Post by: Mrwebster on 30 January 2011, 16:36

what readings did you get..

Title: Re: 1.8 20v t engine problem
Post by: smithy8979 on 30 January 2011, 16:41

i dunno my dad did it im goin bk over to the workshop later so i will let u no

Title: Re: 1.8 20v t engine problem
Post by: ryegault on 31 January 2011, 22:28

my gti did this when i fitted my front mount, was a hose blown off, on th journey home i had to rev the tits off it to get moving from junctions otherwise it would die, if your dads got a ramp have a look under the drivers side and check the hoses on the intercooler then follow them to the turbo and the throttle body. making sure there conected and tight

Title: Re: 1.8 20v t engine problem
Post by: MaXXeH on 01 February 2011, 17:25

disconnect the maf,  if it runs you have a boost leak.

if it still does not run with the maf disconnected you have problems else where.