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Not starting after head gasket replacement

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

JimBee
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Year and Model: 93 and 2 96 850's
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JimBee

Re: Not starting after head gasket replacement

Post by JimBee » Fri May 19, 2017 10:38 am

If you're near an auto supply store and you don't already have one, the inline spark tester would be a very useful purchase. You can visually check every plug wire using that tester.
One thing I discovered the hard way when I didn't have spark was that I turned over the engine with the spark coil high tension wire out of the distributor. That damaged the spark coil, so no spark.
Somebody on this site alerted me to that. How did that happen? I wanted to turn the engine over without ignition so it wouldn't fire up, because I was checking compression. So I pulled the high tension wire. Don't do that. Instead, disconnect the 12 v. input to the spark coil by disconnecting the plug with the wire release clip that supplies the coil. That won't damage the coil.

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erikv11
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Year and Model: 850, S/V70, 06 S60R
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erikv11

Re: Not starting after head gasket replacement

Post by erikv11 » Fri May 19, 2017 10:42 am

JimBee wrote:
Fri May 19, 2017 10:38 am
... disconnect the 12 v. input to the spark coil by disconnecting the plug with the wire release clip that supplies the coil. That won't damage the coil.
Thanks, great tip!
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 285k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

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