What does the adhesive look like? The factory stuff is very thin, similar to properly applied 3M super trim adhesive, should be almost invisible.

If it's brown and thick, it's probably something similar to Liquid Nails and you are in for a long job.....

Get a good scraper, sharp enough to remove softened adhesive but not so sharp you gouge the paint (use a plastic on, I think there is a "three in one" type at most auto or paint places), and get some top quality carb cleaner spray. Read the label, you want the stuff with toluene in it (don't breath the vapors!).

Lift the hood all the way back by releasing the clips on the sides. Cover the engine with some light sheet plastic (disposable drop cloth plastic is best), and scrape all the remnants of foam off. Spray the inside of the hood with the carb spray and let is soak for a bit, then wipe it off with a cloth if you have factory adhesive in there. If it's anything else, you will have to attack it with the scraper again.

Keep at it until you get it as clean as you can, you don't want old adhesive to fail under your new pad.

When it's clean, fit the new pad dry. When you have it all tucked in and located correctly, put a broom near the center with the sweeping end up, handle behind the hood latch. Will be above center some, but this is OK.

Peel the top back and hang over the broom, being carefull not to pull the bottom out of alignment. The broom will keep the pad in place on the bottom and center.

Apply two or three LIGHT coats of 3M super trim adhesive (spray can, number 8090 ONLY -- any other product number will fail under the heat, and the pad will come loose). Two light coats on the exposed back of the pad, then let dry until just barely tacky (5-10 minutes). Press pad to hood, starting at the broom. Be carefull not to pull the pad out of shape as you go, it's not gonna come back off very well!

When it's all stuck up, press firmly all over to seat the glue, then pull the bottom loose and use the broom to hold it up. Spray the adhesive on the bottom half as you didt for the top, allow to dry, and install and press down.

Works perfectly.

Takes about half an our or so to glue the new one in, took me almost three to get the old glue off, nasty stuff that didn't hold the pad up!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!